1 00:00:01,413 --> 00:00:03,586 On this episode of "Expedition Files," 2 00:00:03,586 --> 00:00:05,000 in 1937, 3 00:00:05,172 --> 00:00:08,172 the Hindenburg disaster shocked the world... -[explosion blasts] 4 00:00:08,344 --> 00:00:11,793 ...when a fiery explosion ended the age of airships. 5 00:00:11,965 --> 00:00:13,931 [reporter] Oh, there's smoke and there's flames now. 6 00:00:14,068 --> 00:00:15,896 Oh, the humanity. 7 00:00:16,033 --> 00:00:18,172 [Josh] Was it a tragic accident... 8 00:00:18,344 --> 00:00:20,827 or a deadly act of sabotage? 9 00:00:23,275 --> 00:00:26,689 Then, in 1967, the Patterson-Gimlin film 10 00:00:26,862 --> 00:00:30,482 captures this iconic footage, which some believe proves 11 00:00:30,655 --> 00:00:32,171 the existence of Bigfoot. 12 00:00:34,413 --> 00:00:38,379 Now, 21st-century technology may determine the truth. 13 00:00:40,413 --> 00:00:46,103 And in 525 BC, an army of 50,000 Persians is said to be 14 00:00:46,103 --> 00:00:48,379 swallowed by the desert sands, 15 00:00:48,551 --> 00:00:50,275 vanishing off the face of the Earth. 16 00:00:51,379 --> 00:00:54,793 Now, we uncover a shocking theory that may reveal 17 00:00:54,965 --> 00:00:56,793 the truth behind this epic myth. 18 00:01:00,275 --> 00:01:02,000 In the corridors of time... 19 00:01:04,206 --> 00:01:07,172 are mysteries that defy explanation. 20 00:01:08,793 --> 00:01:12,517 Now, I'm traveling through history itself 21 00:01:15,000 --> 00:01:16,586 on a search for the truth. 22 00:01:19,000 --> 00:01:20,068 New evidence. 23 00:01:21,931 --> 00:01:23,103 Shocking answers. 24 00:01:25,103 --> 00:01:26,172 I'm Josh Gates, 25 00:01:27,379 --> 00:01:28,482 and these... 26 00:01:30,482 --> 00:01:33,206 are my "Expedition Files." 27 00:01:35,689 --> 00:01:39,172 There's nothing simpler than true or false, right? 28 00:01:39,172 --> 00:01:40,793 My name is Josh, true. 29 00:01:40,965 --> 00:01:44,206 I've got a thing for safari shirts, also clearly true. 30 00:01:44,378 --> 00:01:47,310 I've been to outer space, false, but come on, NASA, 31 00:01:47,482 --> 00:01:48,517 hook a guy up. 32 00:01:48,689 --> 00:01:50,827 In short, something's a fact or it's not. 33 00:01:51,000 --> 00:01:51,827 It's simple. 34 00:01:52,000 --> 00:01:53,896 Except, of course, when it isn't. 35 00:01:53,896 --> 00:01:56,723 The cause of certain events, or even whether they happened 36 00:01:56,896 --> 00:01:59,827 at all, have been debated for years, centuries, 37 00:02:00,000 --> 00:02:01,241 even millennia. 38 00:02:01,241 --> 00:02:04,103 And tonight, we examine three such mysteries that live 39 00:02:04,275 --> 00:02:06,586 in the blurry margins of history. 40 00:02:06,586 --> 00:02:10,205 But when new evidence brings these stories into focus, 41 00:02:10,378 --> 00:02:13,793 what will be revealed? Fact or fiction? 42 00:02:13,793 --> 00:02:16,620 We begin on May 3, 1937, 43 00:02:16,793 --> 00:02:18,103 in Frankfurt, Germany. 44 00:02:19,689 --> 00:02:22,172 The massive Zeppelin behind me has just completed 45 00:02:22,344 --> 00:02:25,413 its final test flight and is preparing to dock. 46 00:02:25,586 --> 00:02:28,206 In a few hours, it will begin its transatlantic journey 47 00:02:28,379 --> 00:02:33,103 to the United States, carrying 61 crew and 36 passengers. 48 00:02:33,275 --> 00:02:35,793 What they don't know is that in just three days, 49 00:02:35,793 --> 00:02:38,379 35 of those aboard will perish 50 00:02:38,379 --> 00:02:41,896 in one of the most infamous air disasters in history, 51 00:02:42,034 --> 00:02:44,379 because this is the Hindenburg. 52 00:02:44,379 --> 00:02:47,517 And for nearly a century, one critical question 53 00:02:47,689 --> 00:02:49,482 will remain unanswered. 54 00:02:49,655 --> 00:02:52,896 What is the cause of her catastrophic explosion? 55 00:02:52,896 --> 00:02:55,793 But thanks to cutting-edge science and an ingenious 56 00:02:55,965 --> 00:02:59,896 experiment, we may finally have an explanation for the disaster 57 00:03:00,103 --> 00:03:01,482 that shook the skies. 58 00:03:09,724 --> 00:03:13,482 The story of the Hindenburg begins in late 1800s Germany, 59 00:03:13,482 --> 00:03:17,482 where retired military officer Count Ferdinand von Zeppelin 60 00:03:17,655 --> 00:03:20,620 envisions a future where the skies are filled 61 00:03:20,793 --> 00:03:23,379 with massive flying machines. 62 00:03:23,551 --> 00:03:26,103 Blimps were already on the scene, balloons made 63 00:03:26,103 --> 00:03:28,275 of rubberized fabric, which were largely 64 00:03:28,275 --> 00:03:30,586 at the whims of the weather. 65 00:03:30,586 --> 00:03:33,689 But Von Zeppelin intends to change the status quo 66 00:03:33,862 --> 00:03:37,930 by constructing rigid-framed vessels known as "airships." 67 00:03:40,379 --> 00:03:44,000 In 1900, three years before the Wright brothers famously 68 00:03:44,000 --> 00:03:47,000 take flight, Von Zeppelin's first ship, 69 00:03:47,172 --> 00:03:51,103 the 420-foot-long LZ 1, takes to the skies. 70 00:03:52,482 --> 00:03:55,689 With a lightweight metal frame, the propeller-powered craft 71 00:03:55,862 --> 00:03:58,896 uses two state-of-the-art internal combustion engines 72 00:03:59,034 --> 00:04:00,206 mounted on the hull. 73 00:04:01,172 --> 00:04:04,275 And he oh-so-humbly calls it the "Zeppelin." 74 00:04:04,275 --> 00:04:07,000 It's the dawn of the golden age of airships. 75 00:04:08,586 --> 00:04:12,379 By the 1910s, Zeppelin's idea has taken off, literally. 76 00:04:13,275 --> 00:04:16,103 Hundreds of airships are being used for exploration 77 00:04:16,274 --> 00:04:17,724 and military operations, 78 00:04:17,896 --> 00:04:19,930 and plans are underway to use them 79 00:04:20,067 --> 00:04:22,000 for commercial travel. 80 00:04:22,000 --> 00:04:26,275 Then, in 1928, a Zeppelin makes history with the first regular 81 00:04:26,448 --> 00:04:28,517 transatlantic route to New York. 82 00:04:28,689 --> 00:04:30,275 Cheap, it is not. 83 00:04:30,275 --> 00:04:33,275 Round-trip tickets go for about $3,000, 84 00:04:33,448 --> 00:04:36,172 or more than 50 grand today. 85 00:04:36,172 --> 00:04:39,793 On board, passengers wear formal attire and dine on fine 86 00:04:39,965 --> 00:04:43,068 cuisine while gliding thousands of feet above the Earth 87 00:04:43,241 --> 00:04:46,275 in passenger cabins the size of train carriages. 88 00:04:48,103 --> 00:04:50,724 The only place near Manhattan with enough space to dock 89 00:04:50,896 --> 00:04:53,586 the ship is a field at the U.S. Naval Air Station 90 00:04:53,758 --> 00:04:55,896 in Lakehurst, New Jersey. 91 00:04:55,896 --> 00:04:58,586 At one point, it was proposed that Zeppelins could dock 92 00:04:58,758 --> 00:05:01,275 atop the mast at the Empire State Building, 93 00:05:01,448 --> 00:05:03,827 something that's tested only once. 94 00:05:04,000 --> 00:05:06,689 It turns out disembarking on a windswept gangplank 95 00:05:06,689 --> 00:05:08,379 a thousand feet off the ground 96 00:05:08,379 --> 00:05:10,724 is a bit too sporty for elite travelers. 97 00:05:12,275 --> 00:05:15,103 In the 1930s, the Zeppelin Company constructs 98 00:05:15,103 --> 00:05:19,379 two monumental airships, the Graf Zeppelin II 99 00:05:19,379 --> 00:05:22,103 and her sister ship, the Hindenburg. 100 00:05:22,275 --> 00:05:24,793 Each the length of two and a half football fields, 101 00:05:24,793 --> 00:05:29,103 the twin airships are 17 times larger than the first Zeppelin, 102 00:05:29,103 --> 00:05:32,206 making them the biggest ever to fly by far. 103 00:05:34,689 --> 00:05:38,103 On March 4th, 1936, the Hindenburg embarks 104 00:05:38,103 --> 00:05:39,793 on her maiden flight, 105 00:05:39,965 --> 00:05:43,275 a three-hour trip from Friedrichshafen, Germany. 106 00:05:43,448 --> 00:05:45,827 Though the Hindenburg is originally designed to use 107 00:05:46,000 --> 00:05:49,482 nonflammable helium as its lifting gas, the supply is 108 00:05:49,482 --> 00:05:52,620 limited in Germany, due to American sanctions. 109 00:05:52,793 --> 00:05:55,586 German engineers instead decide to fill the airship 110 00:05:55,586 --> 00:05:57,793 with highly flammable hydrogen. 111 00:05:57,793 --> 00:06:00,620 It's a decision that will prove fateful. 112 00:06:00,793 --> 00:06:04,379 And there's another last-minute change to the Hindenburg. 113 00:06:04,379 --> 00:06:07,689 Germany's ruling Nazi Party insists the airship be 114 00:06:07,862 --> 00:06:09,586 decorated with large swastikas, 115 00:06:09,758 --> 00:06:12,482 showcasing the Third Reich's power to the world. 116 00:06:14,310 --> 00:06:16,310 Over the next year, the Hindenburg makes 117 00:06:16,482 --> 00:06:18,310 63 commercial flights, 118 00:06:18,482 --> 00:06:22,068 transporting more than 1,000 passengers across the Atlantic. 119 00:06:23,172 --> 00:06:26,482 On May 3, 1937, the Hindenburg departs 120 00:06:26,482 --> 00:06:29,103 from Frankfurt, Germany, to New Jersey. 121 00:06:29,103 --> 00:06:33,000 Among the 36 passengers on board are prestigious figures 122 00:06:33,000 --> 00:06:35,275 like German writer, Leonhard Adelt, 123 00:06:35,448 --> 00:06:38,172 American perfume executive, Burtis Dolan, 124 00:06:38,172 --> 00:06:40,931 and possibly the best airship pilot in the world, 125 00:06:41,068 --> 00:06:42,172 Ernst A. Lehmann, 126 00:06:42,344 --> 00:06:45,068 who joins this journey as an observer. 127 00:06:45,241 --> 00:06:49,000 Also on board is Joseph Späh, a vaudeville acrobat 128 00:06:49,000 --> 00:06:51,000 and comedian returning to the U.S. 129 00:06:51,137 --> 00:06:53,206 after a European tour. 130 00:06:53,379 --> 00:06:54,896 He plans to surprise his children 131 00:06:55,034 --> 00:06:58,586 with a new family pet, a German shepherd named Ulla, 132 00:06:58,586 --> 00:07:01,827 currently housed in the airship's freight area. 133 00:07:04,275 --> 00:07:06,827 But on the main part of the ship, passengers step 134 00:07:07,000 --> 00:07:09,931 into a five-star hotel in the sky. 135 00:07:10,068 --> 00:07:13,275 Inside the Hindenburg's massive hull are two decks with about 136 00:07:13,448 --> 00:07:17,379 6,000 square feet of living space, an airborne mansion 137 00:07:17,379 --> 00:07:20,620 with 25 sleeping cabins, elegant dining rooms 138 00:07:20,793 --> 00:07:21,827 and plush salons. 139 00:07:23,793 --> 00:07:26,103 May 6, 1937. 140 00:07:26,103 --> 00:07:29,379 The Hindenburg has nearly completed her transatlantic 141 00:07:29,379 --> 00:07:32,482 flight and passengers are preparing for their arrival 142 00:07:32,655 --> 00:07:33,724 in the United States. 143 00:07:33,896 --> 00:07:35,517 -[waiter] Welcome home, sir. -Thank you. 144 00:07:37,000 --> 00:07:39,413 The turbulence is due to stormy weather, 145 00:07:39,586 --> 00:07:41,275 as we approach the Naval Air Station 146 00:07:41,275 --> 00:07:42,793 in Lakehurst, New Jersey, 147 00:07:42,793 --> 00:07:44,724 now just moments away. 148 00:07:46,586 --> 00:07:50,172 At 7:21 p.m., the Hindenburg begins its final 149 00:07:50,172 --> 00:07:53,586 descent, ready to connect to a mooring mast, 150 00:07:53,586 --> 00:07:56,724 a towering steel structure built to tether the ship 151 00:07:56,896 --> 00:07:58,896 securely in place. 152 00:07:59,034 --> 00:08:01,896 It drops two mooring ropes, starboard and port, 153 00:08:01,896 --> 00:08:03,172 to the ground. 154 00:08:03,172 --> 00:08:06,620 Below, 90-plus crew wait, quickly working to attach 155 00:08:06,793 --> 00:08:08,793 those ropes to the tall metal mast 156 00:08:08,965 --> 00:08:10,275 and other anchors on the ground. 157 00:08:11,379 --> 00:08:12,896 Exactly four minutes later, 158 00:08:12,896 --> 00:08:14,586 at 7:25, 159 00:08:14,758 --> 00:08:15,931 disaster strikes. 160 00:08:17,689 --> 00:08:19,586 [heavy thud] 161 00:08:19,758 --> 00:08:23,103 The ship is rocked by a massive jolt. 162 00:08:23,103 --> 00:08:26,000 Alarmed, Joseph Späh and the other passengers feel 163 00:08:26,000 --> 00:08:28,482 sudden intense heat and the airship 164 00:08:28,655 --> 00:08:29,724 rapidly descending. 165 00:08:32,172 --> 00:08:34,586 As flames begin to engulf the Hindenburg, 166 00:08:34,758 --> 00:08:36,413 the passengers panic. 167 00:08:36,586 --> 00:08:38,620 Fearing he'll never see his family again, 168 00:08:38,793 --> 00:08:42,688 Späh, the vaudeville actor, uses his training and reflexes 169 00:08:42,861 --> 00:08:47,068 to execute his most daring performance by blindly jumping 170 00:08:47,241 --> 00:08:50,206 out the window and praying he can survive the fall. 171 00:08:51,689 --> 00:08:53,586 [reporter] It burst into flames. 172 00:08:53,586 --> 00:08:55,103 It's fire, and it's blazing. 173 00:08:55,103 --> 00:08:57,689 It's blazing terrible! Oh, my... 174 00:08:59,517 --> 00:09:01,172 Oh, the humanity... 175 00:09:02,379 --> 00:09:03,793 [overlapping screams] 176 00:09:05,724 --> 00:09:08,586 [Josh] In less than a minute, flames consume 177 00:09:08,586 --> 00:09:10,793 the colossal airship. 178 00:09:10,965 --> 00:09:14,931 Of the 97 people on board, 35 perish, as well as one 179 00:09:15,068 --> 00:09:16,172 member of the ground crew. 180 00:09:17,275 --> 00:09:19,172 Given the scale of the explosion, 181 00:09:19,172 --> 00:09:21,482 it's a miracle anyone survives. 182 00:09:21,482 --> 00:09:24,689 And yet, 62 people stagger from the wreckage. 183 00:09:26,379 --> 00:09:30,000 Among them is Joseph Späh, whose acrobatic leap of faith 184 00:09:30,172 --> 00:09:31,931 sent him plunging 20 feet. 185 00:09:33,206 --> 00:09:37,000 By executing a barrel roll, he escapes with only a broken 186 00:09:37,172 --> 00:09:39,827 ankle and is reunited with his family. 187 00:09:40,000 --> 00:09:41,068 Tragically, 188 00:09:41,241 --> 00:09:43,896 his dog Ulla is not among the survivors, 189 00:09:44,034 --> 00:09:45,379 nor are many others, 190 00:09:45,551 --> 00:09:48,379 including perfume executive Burtis Dolan 191 00:09:48,551 --> 00:09:51,517 and world-class Zeppelin pilot Ernst A. Lehmann. 192 00:09:53,103 --> 00:09:56,482 The Hindenburg disaster becomes worldwide news, 193 00:09:56,482 --> 00:10:00,068 shattering public confidence in Zeppelins and effectively 194 00:10:00,241 --> 00:10:01,896 ending the age of the airship. 195 00:10:03,103 --> 00:10:05,827 German and American authorities immediately launch 196 00:10:06,000 --> 00:10:09,724 investigations into what or who sparked the blaze. 197 00:10:12,172 --> 00:10:14,724 One of the first theories, sabotage. 198 00:10:14,896 --> 00:10:17,275 Because the Hindenburg displayed swastikas, 199 00:10:17,275 --> 00:10:20,413 the Zeppelin company has received threatening anti-Nazi 200 00:10:20,586 --> 00:10:21,896 letters in recent months. 201 00:10:23,482 --> 00:10:26,379 And among the early suspects, Hindenburg crew member 202 00:10:26,379 --> 00:10:30,827 Eric Spehl, based on his alleged anti-Nazi views and access 203 00:10:31,000 --> 00:10:33,379 to Gas Cell 4, the area of the Zeppelin 204 00:10:33,551 --> 00:10:35,482 where the fire began. 205 00:10:35,482 --> 00:10:38,517 But when investigators find no physical evidence of a bomb 206 00:10:38,689 --> 00:10:41,103 in the wreckage, Spehl is exonerated. 207 00:10:42,103 --> 00:10:45,827 Investigators then move on to our acrobat, Joseph Späh, 208 00:10:46,000 --> 00:10:48,482 not for his politics, but for his repeated trips 209 00:10:48,655 --> 00:10:51,379 to the cargo hold near the airship's stern. 210 00:10:51,551 --> 00:10:54,413 His movements looked suspicious, until it's revealed 211 00:10:54,586 --> 00:10:56,896 that he'd only been visiting his beloved dog. 212 00:11:00,275 --> 00:11:02,275 Another theory points to flammable paint 213 00:11:02,275 --> 00:11:05,379 on the Zeppelin's exterior as a potential culprit. 214 00:11:05,551 --> 00:11:08,724 But that too is debunked when it's revealed the ignited paint 215 00:11:08,896 --> 00:11:10,275 burns too slowly to match 216 00:11:10,448 --> 00:11:12,586 the Hindenburg's rapid incineration. 217 00:11:13,586 --> 00:11:15,275 Ultimately, it's one of the architects 218 00:11:15,448 --> 00:11:18,310 of the Hindenburg, Dr. Hugo Eckener, who comes up 219 00:11:18,482 --> 00:11:20,793 with a credible theory about what started 220 00:11:20,793 --> 00:11:22,793 the tragic chain of events. 221 00:11:22,793 --> 00:11:25,620 It's his belief that a sharp turn during the airship's 222 00:11:25,793 --> 00:11:29,000 approach caused one of its bracing wires to snap, 223 00:11:29,137 --> 00:11:32,379 puncturing a gas cell that led to a hydrogen leak. 224 00:11:32,551 --> 00:11:34,413 One small leak, 225 00:11:34,586 --> 00:11:37,275 and it's like a fuse to a powder keg. 226 00:11:37,275 --> 00:11:41,103 The leaking hydrogen gas is a disaster waiting to happen, 227 00:11:41,103 --> 00:11:44,000 but there is still one critical question. 228 00:11:44,172 --> 00:11:45,413 What ignites it? 229 00:11:45,586 --> 00:11:48,379 After nearly a century, a groundbreaking scientific 230 00:11:48,551 --> 00:11:51,689 experiment may finally prove the shocking cause 231 00:11:51,862 --> 00:11:53,413 of the fiery explosion. 232 00:12:01,689 --> 00:12:03,689 [Josh] The explosive fate of the Hindenburg is one 233 00:12:03,689 --> 00:12:06,379 of history's most infamous mysteries. 234 00:12:06,379 --> 00:12:08,482 For decades, though, no one could prove 235 00:12:08,482 --> 00:12:10,275 what ignited the explosion. 236 00:12:11,586 --> 00:12:13,586 Almost immediately after the accident, 237 00:12:13,758 --> 00:12:16,172 one theory gained popularity. 238 00:12:16,172 --> 00:12:19,275 With the ship descending through stormy and electrically 239 00:12:19,275 --> 00:12:22,172 charged skies, many believed the culprit 240 00:12:22,344 --> 00:12:23,689 was static electricity. 241 00:12:24,896 --> 00:12:28,275 When static charges build up on one surface and come close 242 00:12:28,275 --> 00:12:30,827 to another surface with a different charge, 243 00:12:31,000 --> 00:12:33,517 they naturally try to balance out. 244 00:12:33,689 --> 00:12:36,379 The excess electrons jump across the gap 245 00:12:36,551 --> 00:12:38,586 to neutralize the difference. 246 00:12:38,586 --> 00:12:42,275 That sudden flow of electrons is what creates a spark, 247 00:12:42,275 --> 00:12:44,689 just like the shock you feel when you shuffle across 248 00:12:44,689 --> 00:12:46,379 a carpet and touch a doorknob. 249 00:12:47,275 --> 00:12:49,896 The theory is that when the mooring lines completed 250 00:12:49,896 --> 00:12:52,379 the circuit between the ship and the ground, 251 00:12:52,379 --> 00:12:54,103 an instant static spark 252 00:12:54,275 --> 00:12:57,482 mixed with the leaking hydrogen, and boom. 253 00:12:57,482 --> 00:12:59,896 But the problem is, it wasn't instant. 254 00:12:59,896 --> 00:13:02,413 The explosion didn't happen for several minutes 255 00:13:02,586 --> 00:13:04,586 after the mooring lines were connected. 256 00:13:04,758 --> 00:13:07,931 And so, for three-quarters of a century, nobody could prove 257 00:13:08,068 --> 00:13:10,172 static electricity was to blame. 258 00:13:10,344 --> 00:13:14,517 But in 2021, Caltech professor Konstantinos Giapis took 259 00:13:14,689 --> 00:13:17,689 matters into his own hands and conducted a bold 260 00:13:17,862 --> 00:13:20,482 new experiment, recreating the disaster. 261 00:13:21,896 --> 00:13:24,827 [Dr. Giapis] The Hindenburg was an engineering marvel 262 00:13:25,000 --> 00:13:26,275 unmatched in the world. 263 00:13:26,275 --> 00:13:28,482 And then it explodes right during the landing. 264 00:13:28,482 --> 00:13:30,068 It never made sense. 265 00:13:30,241 --> 00:13:33,896 For my experiments, I built this scaffold 266 00:13:33,896 --> 00:13:36,620 made of duralumin, the same material that was used 267 00:13:36,793 --> 00:13:38,137 on the Hindenburg. 268 00:13:38,137 --> 00:13:43,275 And then I recreated the skin as best as I could using modern 269 00:13:43,275 --> 00:13:45,275 chemical analysis techniques. 270 00:13:45,275 --> 00:13:48,379 I found a rope that is similar to what was used 271 00:13:48,551 --> 00:13:50,172 at the Hindenburg. 272 00:13:50,172 --> 00:13:53,000 It's this thick rope that is braided. 273 00:13:53,137 --> 00:13:56,310 [Josh] Professor Giapis added an electric charge to the model 274 00:13:56,482 --> 00:13:59,689 to mimic stormy atmospheric conditions that existed that 275 00:13:59,689 --> 00:14:02,931 night and connected the frame of his model to the ground with 276 00:14:03,068 --> 00:14:04,310 a rope, just as the crew 277 00:14:04,482 --> 00:14:06,586 had done when the Hindenburg was landing. 278 00:14:07,620 --> 00:14:10,310 [Dr. Giapis] When the mooring lines hit the ground, 279 00:14:10,482 --> 00:14:14,275 then they connect the interior part of the airship 280 00:14:14,275 --> 00:14:15,413 to the ground. 281 00:14:15,586 --> 00:14:21,000 In doing so, now you create a device that is called 282 00:14:21,172 --> 00:14:24,172 a "capacitor," which can accumulate electricity. 283 00:14:25,517 --> 00:14:28,379 [Josh] Electrons from the ground rushed across the ropes 284 00:14:28,551 --> 00:14:33,000 into the frame while the skin remained positively charged. 285 00:14:33,000 --> 00:14:37,000 Then increased charges built up on the surface of the airship, 286 00:14:37,172 --> 00:14:39,275 creating an electrostatic imbalance 287 00:14:39,448 --> 00:14:41,482 between the skin and the inner frame. 288 00:14:43,172 --> 00:14:45,586 According to Giapis, when the imbalance became 289 00:14:45,758 --> 00:14:49,310 too great, the electrons tried to neutralize, leaping from 290 00:14:49,482 --> 00:14:52,068 the framework to the skin of the ship. 291 00:14:52,241 --> 00:14:54,758 That sudden leap of energy is the spark. 292 00:14:56,103 --> 00:14:59,586 But there was also an issue of how does the spark 293 00:14:59,586 --> 00:15:01,103 find the leak? 294 00:15:01,103 --> 00:15:03,103 Because the spark has to happen there where 295 00:15:03,103 --> 00:15:04,413 there is something to burn. 296 00:15:04,586 --> 00:15:07,379 If the spark happened in the front of the airship 297 00:15:07,551 --> 00:15:10,310 and the leak was in its tail, then there would be no fire. 298 00:15:10,482 --> 00:15:11,517 The two have to connect. 299 00:15:11,517 --> 00:15:13,206 The two have to happen at the same position. 300 00:15:14,379 --> 00:15:17,172 Then, Giapis uncovered something critical, 301 00:15:17,344 --> 00:15:21,275 a design flaw that made the entire airship a tinderbox. 302 00:15:21,275 --> 00:15:24,793 The Hindenburg's outer skin was separated from its metal frame 303 00:15:24,965 --> 00:15:28,586 with wooden pins, which created tiny gaps where electric 304 00:15:28,586 --> 00:15:30,000 charges could accumulate. 305 00:15:31,689 --> 00:15:34,689 Those gaps became traps for electricity. 306 00:15:34,689 --> 00:15:37,896 At every pin, pockets of high voltage built up, 307 00:15:38,034 --> 00:15:42,068 hundreds of potential sparks scattered across the ship. 308 00:15:42,241 --> 00:15:44,689 Giapis believes it wasn't just one spark that 309 00:15:44,862 --> 00:15:48,586 doomed the Hindenburg, but many, leaping wherever skin 310 00:15:48,758 --> 00:15:50,310 and frame came close. 311 00:15:50,482 --> 00:15:53,000 And one of them, at the worst possible place, 312 00:15:53,172 --> 00:15:54,689 ignited the leaking hydrogen. 313 00:15:56,103 --> 00:15:57,310 Every few feet, 314 00:15:57,482 --> 00:15:58,896 you get another spark, another spark. 315 00:15:59,034 --> 00:16:01,517 So, you know, so there were multiple sparks happening 316 00:16:01,689 --> 00:16:03,379 all over the place. 317 00:16:03,551 --> 00:16:06,103 So one of them happened to be right there where the hydrogen, 318 00:16:06,275 --> 00:16:09,379 you know, was mixed with air and enough to ignite it. 319 00:16:09,379 --> 00:16:12,896 So that explains how the spark found the leak 320 00:16:12,896 --> 00:16:14,379 in such an enormous airship. 321 00:16:15,310 --> 00:16:17,068 So it was like a eureka moment. 322 00:16:18,586 --> 00:16:22,482 On the actual Hindenburg, it took exactly four minutes 323 00:16:22,482 --> 00:16:24,689 between the mooring ropes hitting the ground 324 00:16:24,862 --> 00:16:26,586 and the moment it exploded. 325 00:16:26,758 --> 00:16:29,103 In Giapis' experiment, the time it took for 326 00:16:29,275 --> 00:16:33,517 the electrical tension to build up and ignite was, wait for it, 327 00:16:33,689 --> 00:16:35,103 exactly four minutes. 328 00:16:36,758 --> 00:16:40,103 This was a mystery that puzzled the world for 84 years, 329 00:16:40,103 --> 00:16:42,758 and I think I solved it. 330 00:16:45,000 --> 00:16:47,206 In the end, the Hindenburg's downfall was 331 00:16:47,379 --> 00:16:51,517 a perfect storm of atmospheric conditions, design flaws, 332 00:16:51,689 --> 00:16:53,172 and leaking hydrogen. 333 00:16:53,172 --> 00:16:57,172 And while its fiery end marked the death of the airship era, 334 00:16:57,172 --> 00:17:01,275 its legacy still looms large, a searing reminder of how 335 00:17:01,448 --> 00:17:04,586 one spark can change the course of history. 336 00:17:11,103 --> 00:17:13,103 [mysterious music plays] 337 00:17:15,378 --> 00:17:18,275 Welcome to Bluff Creek, in Northern California. 338 00:17:18,275 --> 00:17:21,482 The date is October 20th, 1967, 339 00:17:21,655 --> 00:17:23,275 and it's a picture-perfect day 340 00:17:23,448 --> 00:17:25,619 here amidst the towering redwoods. 341 00:17:25,792 --> 00:17:27,896 Which brings us to these two cowboys, 342 00:17:27,896 --> 00:17:30,482 Roger Patterson and Bob Gimlin. 343 00:17:30,482 --> 00:17:33,103 And just over there, movement. 344 00:17:33,275 --> 00:17:36,827 Not a deer, not a bird, something much bigger. 345 00:17:37,000 --> 00:17:41,482 Patterson rolls on his 16mm camera and films 59 seconds of 346 00:17:41,482 --> 00:17:46,310 shaky, grainy footage that will make Bigfoot a household name. 347 00:17:46,482 --> 00:17:49,586 So, is it irrefutable proof of a Sasquatch 348 00:17:49,586 --> 00:17:52,758 or the most convincing hoax ever staged? 349 00:17:52,931 --> 00:17:56,482 Nearly 60 years later, cutting-edge AI may finally 350 00:17:56,655 --> 00:17:58,758 bring this mystery into focus. 351 00:18:08,275 --> 00:18:11,379 According to Roger Patterson and Bob Gimlin, 352 00:18:11,551 --> 00:18:14,689 after they filmed the creature, it vanishes into the trees, 353 00:18:14,689 --> 00:18:18,689 leaving behind trail of massive footprints, each pressed deep 354 00:18:18,862 --> 00:18:20,482 into the soft creek bed soil. 355 00:18:22,827 --> 00:18:25,689 They say they race back to town to develop the film, 356 00:18:25,862 --> 00:18:28,793 and when the images finally flicker to life, what they've 357 00:18:28,965 --> 00:18:30,689 captured is beyond belief. 358 00:18:31,689 --> 00:18:33,379 Roll it. 359 00:18:33,551 --> 00:18:35,586 [camera roll whirring] 360 00:18:38,000 --> 00:18:41,827 For a few fleeting moments, a large, hairy biped strides 361 00:18:42,000 --> 00:18:44,896 away from the camera, glancing back as if it knows 362 00:18:44,896 --> 00:18:46,068 it's being watched. 363 00:18:48,482 --> 00:18:52,000 Its gait is unusual, arms swinging wide. 364 00:18:56,517 --> 00:18:59,103 Sightings of a large mystery primate in the woods 365 00:18:59,103 --> 00:19:00,620 are nothing new. 366 00:19:00,793 --> 00:19:04,620 This is just the latest chapter in a story told for centuries. 367 00:19:06,517 --> 00:19:09,413 Indigenous people have shared tales of towering, 368 00:19:09,586 --> 00:19:12,896 hairy creatures, Sasquatch haunting the forests. 369 00:19:14,586 --> 00:19:18,000 Later, your European settlers in America also told tales 370 00:19:18,000 --> 00:19:22,551 of encounters with mysterious giants lurking in the wild. 371 00:19:25,000 --> 00:19:29,103 Then, in 1958, came the first major modern evidence. 372 00:19:29,275 --> 00:19:32,275 A road crew uncovered massive human-like footprints 373 00:19:32,275 --> 00:19:34,172 in the mud near Bluff Creek. 374 00:19:35,689 --> 00:19:39,793 One worker, bulldozer operator Jerry Crew, made a plaster cast 375 00:19:39,793 --> 00:19:42,586 of one of the prints and took it to the local newspaper. 376 00:19:44,000 --> 00:19:47,172 The story grabbed national headlines, and with it, 377 00:19:47,344 --> 00:19:49,206 the name "Bigfoot" was born. 378 00:19:51,689 --> 00:19:54,172 Which brings us back to 1967, 379 00:19:54,172 --> 00:19:56,586 when Bluff Creek returns to the spotlight. 380 00:19:57,517 --> 00:20:00,793 Patterson and Gimlin say they capture their now-iconic 381 00:20:00,793 --> 00:20:03,896 footage right near where the huge footprints were found 382 00:20:03,896 --> 00:20:07,172 10 years earlier in the middle of Northern California's 383 00:20:07,172 --> 00:20:09,000 Six Rivers National Forest. 384 00:20:11,103 --> 00:20:14,379 Bigfoot explodes into the public's imagination. 385 00:20:14,551 --> 00:20:16,172 Pop culture embraces the creature 386 00:20:16,172 --> 00:20:19,000 with merchandise, exhibits, 387 00:20:20,068 --> 00:20:22,275 and starring roles in monster movies. 388 00:20:28,000 --> 00:20:30,827 And all across the country, people are hooked. 389 00:20:31,000 --> 00:20:34,172 True believers pack up cameras and courage and head 390 00:20:34,344 --> 00:20:37,103 for the woods, hoping to capture their own proof. 391 00:20:38,586 --> 00:20:41,482 But anthropologists and biologists at the time 392 00:20:41,655 --> 00:20:43,689 dismissed the film as a hoax. 393 00:20:43,862 --> 00:20:47,068 Many claim Bigfoot is just a man in a gorilla suit filmed 394 00:20:47,241 --> 00:20:50,310 at a distance with intentionally shaky camerawork. 395 00:20:52,793 --> 00:20:55,103 In particular, skeptics doubt the credibility 396 00:20:55,275 --> 00:20:56,586 of Roger Patterson, 397 00:20:56,586 --> 00:20:59,310 a rodeo cowboy and Bigfoot enthusiast 398 00:20:59,482 --> 00:21:02,758 who, coincidentally, published a book on the subject 399 00:21:02,931 --> 00:21:06,172 just a year before filming his famous encounter. 400 00:21:06,344 --> 00:21:09,275 They suggest Patterson staged the footage to make money 401 00:21:09,448 --> 00:21:11,275 and drum up publicity for his book. 402 00:21:13,413 --> 00:21:16,482 But while fame certainly finds Roger Patterson, 403 00:21:16,482 --> 00:21:17,620 fortune never does. 404 00:21:18,586 --> 00:21:23,103 Five years later in 1972, he dies of cancer, broke, 405 00:21:23,103 --> 00:21:26,103 but still defiantly clinging to his Bigfoot story 406 00:21:26,275 --> 00:21:28,275 to his last breath. 407 00:21:30,758 --> 00:21:34,103 Flash-forward to a decade later and a bombshell claim. 408 00:21:35,068 --> 00:21:38,931 Hollywood costume maker Philip Morris says he sold Patterson 409 00:21:39,068 --> 00:21:42,758 a gorilla suit in 1967. 410 00:21:42,931 --> 00:21:44,931 Then in the 2000s, there's another 411 00:21:45,068 --> 00:21:46,689 apparent revelation. 412 00:21:46,689 --> 00:21:49,586 Gimlin's neighbor, Bob Hieronimus, actually says 413 00:21:49,758 --> 00:21:53,896 he was the one inside the suit, lumbering through Bluff Creek 414 00:21:54,034 --> 00:21:56,448 in football pads to bulk up the shoulders. 415 00:21:58,931 --> 00:22:03,275 While all of this seems pretty damning, not so fast, 416 00:22:03,275 --> 00:22:05,482 because the two confessions don't match. 417 00:22:06,689 --> 00:22:09,275 Philip and Bob describe different materials, 418 00:22:09,448 --> 00:22:11,827 colors, even suit designs. 419 00:22:12,000 --> 00:22:15,896 With decades between the event and these so-called tell-alls. 420 00:22:16,034 --> 00:22:18,482 Some suspect the two men are just separately trying 421 00:22:18,482 --> 00:22:20,965 to cash in on the famous footage. 422 00:22:23,413 --> 00:22:26,172 Some expert analysis also seems to support 423 00:22:26,344 --> 00:22:28,172 the film's authenticity. 424 00:22:28,344 --> 00:22:31,172 Hollywood creature effects and film restoration expert 425 00:22:31,172 --> 00:22:33,896 Bill Munns conducts a forensic analysis 426 00:22:34,034 --> 00:22:36,172 of the Patterson-Gimlin film. 427 00:22:36,172 --> 00:22:39,172 No costume from that era, he concludes, could move 428 00:22:39,172 --> 00:22:42,379 as naturally as the figure in the film. 429 00:22:42,379 --> 00:22:45,827 After all, the most advanced ape costumes in 1960s 430 00:22:46,000 --> 00:22:49,896 were in "Planet of the Apes," and those required nearly 100 431 00:22:49,896 --> 00:22:53,172 skilled artists, not something amateur filmmakers like 432 00:22:53,172 --> 00:22:56,206 Patterson and Gimlin could replicate. 433 00:22:56,379 --> 00:22:59,931 If Munns is right, then this isn't just a man in a suit. 434 00:23:00,137 --> 00:23:03,000 It would be the most compelling evidence of an undiscovered 435 00:23:03,137 --> 00:23:04,931 creature ever caught on film. 436 00:23:06,000 --> 00:23:08,482 And to this day, Patterson's partner, 437 00:23:08,482 --> 00:23:11,620 Bob Gimlin, also remains steadfast that what 438 00:23:11,793 --> 00:23:15,413 they captured on film in Bluff Creek is the real deal. 439 00:23:15,586 --> 00:23:19,896 That particular day on October 20th, 1967... 440 00:23:19,896 --> 00:23:21,896 Oh, my God, they really do exist! 441 00:23:23,896 --> 00:23:27,275 No one's ever been able to prove them right or wrong. 442 00:23:27,275 --> 00:23:30,068 But now, cutting-edge artificial intelligence 443 00:23:30,241 --> 00:23:32,793 dissects the footage like never before. 444 00:23:32,793 --> 00:23:36,379 Will it finally confirm Bigfoot or a big fraud? 445 00:23:44,068 --> 00:23:48,482 [Josh] For over 50 years, footage that some contend is the definitive 446 00:23:48,655 --> 00:23:51,448 proof of Bigfoot has been analyzed, debated, 447 00:23:51,620 --> 00:23:53,655 debunked, and rebunked. 448 00:23:53,827 --> 00:23:55,793 Not a real word, but you get the idea. 449 00:23:55,965 --> 00:23:58,862 Now, scientists armed with cutting-edge technology 450 00:23:59,000 --> 00:24:01,689 are reexamining the film once more. 451 00:24:01,689 --> 00:24:05,275 Leading the way is Dr. Jeff Meldrum, professor of anatomy 452 00:24:05,448 --> 00:24:08,034 and anthropology at Idaho State University. 453 00:24:09,586 --> 00:24:14,034 Now, in the age of artificial intelligence, the prospect is 454 00:24:14,206 --> 00:24:18,655 very real that someone could take the Patterson-Gimlin film 455 00:24:18,827 --> 00:24:24,379 and instruct AI to, quote, "clean it up," to create 456 00:24:24,551 --> 00:24:28,379 the clearest version and make a definitive statement 457 00:24:28,379 --> 00:24:31,275 of the credibility of the Patterson-Gimlin film. 458 00:24:33,000 --> 00:24:35,655 [Josh] But there is one major challenge to a definitive 459 00:24:35,827 --> 00:24:37,586 reexamination of the footage -- 460 00:24:37,758 --> 00:24:40,862 the original film reel is said to be missing. 461 00:24:41,000 --> 00:24:44,379 Sometime in the mid 1990s, it apparently disappears 462 00:24:44,379 --> 00:24:46,137 from a film vault. 463 00:24:46,310 --> 00:24:49,275 The fact of the matter is, the original film 464 00:24:49,448 --> 00:24:51,655 is no longer available. 465 00:24:51,827 --> 00:24:56,275 And so we are left with the numerous copies that have 466 00:24:56,448 --> 00:24:59,172 been made over the years, in many instances, 467 00:24:59,172 --> 00:25:01,482 copies of copies of copies. 468 00:25:01,655 --> 00:25:04,482 And of course, with each copying process, 469 00:25:05,689 --> 00:25:10,000 the resulting images are rather degraded and have lost a lot 470 00:25:10,137 --> 00:25:13,448 of clarity that was present in the original. 471 00:25:13,620 --> 00:25:17,482 And that has historically produced some very misleading 472 00:25:17,482 --> 00:25:20,896 conclusions and inferences drawn from the film. 473 00:25:20,896 --> 00:25:25,172 Dr. Meldrum set out to rebuild the Patterson-Gimlin film frame 474 00:25:25,344 --> 00:25:29,103 by frame, correcting errors from decades of copying. 475 00:25:29,275 --> 00:25:32,896 And to do so, he returned to Bill Munns, the special effects 476 00:25:33,034 --> 00:25:35,448 expert who had previously analyzed the film 477 00:25:35,620 --> 00:25:37,448 and accumulated dozens of copies 478 00:25:37,620 --> 00:25:39,586 of it during the process. 479 00:25:39,586 --> 00:25:43,103 In undertaking this project, Bill very carefully 480 00:25:43,275 --> 00:25:46,655 and precisely created high-resolution photographic 481 00:25:46,827 --> 00:25:52,275 images of individual film frames, creating an archive 482 00:25:52,275 --> 00:25:55,586 that we've been able to use in this project. 483 00:25:56,965 --> 00:26:00,586 [Josh] Armed with the highest resolution images of each film frame, 484 00:26:00,586 --> 00:26:03,275 Meldrum worked with artificial intelligence specialist, 485 00:26:03,275 --> 00:26:06,793 Isaac Tian, to enhance the film as never before. 486 00:26:08,344 --> 00:26:14,241 With his talents, Isaac was able to stabilize these images, 487 00:26:14,413 --> 00:26:20,000 removed much of the motion jitter and optimized 488 00:26:20,137 --> 00:26:23,068 the information that was in the existing copies 489 00:26:23,241 --> 00:26:28,896 of the film without adding any extraneous information. 490 00:26:29,793 --> 00:26:33,793 This remarkably stable and clear depiction 491 00:26:33,965 --> 00:26:36,241 allowed us to render 492 00:26:36,413 --> 00:26:42,000 a version that's as good, certainly, if not better 493 00:26:42,137 --> 00:26:44,034 than the original film strip. 494 00:26:45,068 --> 00:26:46,206 The results? 495 00:26:46,206 --> 00:26:49,000 The clearest version of the Patterson-Gimlin film 496 00:26:49,137 --> 00:26:50,344 ever seen. 497 00:26:50,517 --> 00:26:51,896 Take a look for yourself. 498 00:26:56,379 --> 00:26:58,965 To some experts, this stabilized footage has 499 00:26:59,103 --> 00:27:02,689 the effect of demystifying the Patterson-Gimlin film, 500 00:27:02,689 --> 00:27:06,482 revealing a very human-looking figure crossing the creek. 501 00:27:06,482 --> 00:27:09,000 In other words, a man in a suit. 502 00:27:09,172 --> 00:27:12,103 But the trained eyes of Jeff Meldrum see something 503 00:27:12,275 --> 00:27:13,793 very different. 504 00:27:13,793 --> 00:27:18,275 We can observe not only the muscle groups, but we can 505 00:27:18,448 --> 00:27:21,793 see the contraction in the movements of the joints, 506 00:27:21,965 --> 00:27:24,482 whether it's the quadriceps and the thigh, 507 00:27:24,482 --> 00:27:28,275 it's the tightening of the hamstrings and the action 508 00:27:28,275 --> 00:27:30,379 of the tendon across the knee joint. 509 00:27:30,379 --> 00:27:35,103 You can see the breast tissue sitting upon the underlying 510 00:27:35,275 --> 00:27:37,172 muscle of the pectoralis major. 511 00:27:38,137 --> 00:27:39,655 These are not features that are... 512 00:27:40,655 --> 00:27:46,896 easily, if at all possible, incorporate into a costume. 513 00:27:47,034 --> 00:27:52,172 This is a real flesh-and-bones organism that is making its way 514 00:27:52,344 --> 00:27:54,103 across the sandbar. 515 00:27:54,275 --> 00:27:58,689 In my mind, there is just no way that this could be a hoax. 516 00:28:00,793 --> 00:28:04,172 Dr. Meldrum may be convinced the Patterson-Gimlin film is 517 00:28:04,344 --> 00:28:06,586 proof of Bigfoot, but many of his peers 518 00:28:06,758 --> 00:28:08,862 remain extremely skeptical. 519 00:28:09,000 --> 00:28:11,482 They point out that in more than half a century since 520 00:28:11,655 --> 00:28:13,965 the footage was filmed, no physical remains, 521 00:28:14,103 --> 00:28:17,241 scat, or DNA of a Bigfoot-like creature 522 00:28:17,413 --> 00:28:20,241 has ever been scientifically validated. 523 00:28:20,413 --> 00:28:23,896 What is not in doubt is that the iconic footage has left 524 00:28:24,034 --> 00:28:27,793 a Bigfoot-sized print on our collective imagination. 525 00:28:27,965 --> 00:28:32,275 So much so that in 2025, lawmakers in Sacramento even 526 00:28:32,275 --> 00:28:35,862 introduced a bill to declare Bigfoot California's 527 00:28:36,000 --> 00:28:37,172 official cryptid. 528 00:28:37,344 --> 00:28:39,172 No word yet on whether the creature 529 00:28:39,172 --> 00:28:41,137 will show up to accept the honor. 530 00:28:49,275 --> 00:28:53,172 Welcome to Egypt, 525 BC. 531 00:28:53,344 --> 00:28:57,689 These soldiers are part of a 50,000-strong Persian army. 532 00:28:57,689 --> 00:29:00,379 They're on a mission to cross Egypt's punishing western 533 00:29:00,551 --> 00:29:03,241 desert to crush the people of Siwa, 534 00:29:03,413 --> 00:29:05,034 but they'll never get there. 535 00:29:05,206 --> 00:29:09,000 Legend says a savage sandstorm swallows them whole, 536 00:29:09,172 --> 00:29:12,758 an entire army vanishing off the face of the earth. 537 00:29:12,931 --> 00:29:16,034 It's one of the ancient world's most baffling disappearances, 538 00:29:16,206 --> 00:29:17,689 but a millennia later, 539 00:29:17,689 --> 00:29:20,103 a new discovery in the shifting sands 540 00:29:20,275 --> 00:29:23,896 will blow that old story away, like dust in the wind. 541 00:29:30,000 --> 00:29:32,827 [adventurous music plays] 542 00:29:35,275 --> 00:29:38,275 In the 6th century BC, the Persian Empire 543 00:29:38,275 --> 00:29:40,379 has never been stronger. 544 00:29:40,551 --> 00:29:43,862 Under King Cambyses II, the empire stretches from 545 00:29:44,000 --> 00:29:47,896 the Mediterranean to the edge of India, a vast swath 546 00:29:48,034 --> 00:29:50,896 of the ancient world all under Persian control. 547 00:29:55,241 --> 00:29:58,344 The king's next target is Egypt, a land rich 548 00:29:58,517 --> 00:29:59,689 in grain and gold. 549 00:30:00,586 --> 00:30:03,344 Then fate hands him an opportunity. 550 00:30:03,517 --> 00:30:07,241 A young and inexperienced pharaoh named Psamtik III 551 00:30:07,413 --> 00:30:08,689 takes the Egyptian throne. 552 00:30:11,034 --> 00:30:12,758 Cambyses doesn't hesitate. 553 00:30:12,931 --> 00:30:15,551 He launches a full-scale invasion. 554 00:30:15,724 --> 00:30:18,758 The result is a brutal clash of empires. 555 00:30:18,931 --> 00:30:20,793 Thousands fall in battle. 556 00:30:20,965 --> 00:30:23,034 And when the blood and dust settle, 557 00:30:23,206 --> 00:30:25,758 Persia stands victorious. 558 00:30:25,931 --> 00:30:28,896 The mighty kingdom of Egypt is reduced to just another 559 00:30:29,034 --> 00:30:31,965 province in Cambyses' ever-growing empire. 560 00:30:36,758 --> 00:30:40,068 Egypt is also now under the thumb of a foreign king 561 00:30:40,241 --> 00:30:42,137 who doesn't speak their language, 562 00:30:42,310 --> 00:30:43,758 doesn't honor their rituals, 563 00:30:44,689 --> 00:30:46,689 and doesn't respect their religion. 564 00:30:48,758 --> 00:30:52,137 For the Egyptians, things go from bad to worse. 565 00:30:52,310 --> 00:30:54,379 Persian governors and tax collectors sweep 566 00:30:54,551 --> 00:30:56,689 through the country like vultures, 567 00:30:56,689 --> 00:30:59,482 bleeding the land and its people dry. 568 00:30:59,655 --> 00:31:02,172 But some in Egypt won't go quietly. 569 00:31:03,172 --> 00:31:05,965 Way out west, tucked deep in the harsh desert, 570 00:31:06,103 --> 00:31:07,655 lies the Siwa Oasis, 571 00:31:09,275 --> 00:31:13,551 a lush outpost famous for its date palms, fresh water, 572 00:31:13,724 --> 00:31:16,827 and, most importantly, the sacred temple of Amun. 573 00:31:19,275 --> 00:31:22,172 The people of Siwa, fiercely independent and deeply 574 00:31:22,344 --> 00:31:25,172 religious, resist the king's tax collectors, 575 00:31:25,172 --> 00:31:26,689 saying they won't pay. 576 00:31:29,137 --> 00:31:31,758 When Cambyses hears about their defiance, 577 00:31:31,931 --> 00:31:33,275 it is said that he's furious. 578 00:31:33,448 --> 00:31:34,896 [indistinct speaking] 579 00:31:34,896 --> 00:31:38,586 [Josh] He dispatches 50,000 soldiers with a single mission -- 580 00:31:38,586 --> 00:31:41,000 crush the rebels, enslave the locals, 581 00:31:41,172 --> 00:31:44,379 and tear their beloved temple to the ground. 582 00:31:44,379 --> 00:31:46,137 Because nothing says, "I'm in charge," 583 00:31:46,310 --> 00:31:47,896 like destroying a sacred site. 584 00:31:51,655 --> 00:31:54,275 The earliest account of what happens next comes from 585 00:31:54,448 --> 00:31:58,896 the Greek historian Herodotus, writing around 100 years later. 586 00:31:58,896 --> 00:32:04,172 Cambyses commands his 50,000 soldiers to march 550 miles 587 00:32:04,344 --> 00:32:06,965 across the western desert to the Siwa Oasis. 588 00:32:08,793 --> 00:32:10,758 After seven days, the army reaches 589 00:32:10,931 --> 00:32:14,000 their first waypoint, the village of Kharga Oasis. 590 00:32:15,482 --> 00:32:18,862 It's apparently the last stop the soldiers ever make. 591 00:32:19,000 --> 00:32:21,655 As the army marches on, Herodotus writes that 592 00:32:21,827 --> 00:32:24,965 the warriors are confronted by a cataclysmic event. 593 00:32:26,000 --> 00:32:29,034 [Herodotus] A wind arose from the south, strong and deadly, 594 00:32:30,379 --> 00:32:33,448 bringing with it vast columns of whirling sand, 595 00:32:33,620 --> 00:32:36,137 which entirely covered up the troops and caused them 596 00:32:36,310 --> 00:32:37,379 wholly to disappear. 597 00:32:38,448 --> 00:32:40,482 [dramatic music plays] 598 00:32:49,172 --> 00:32:51,655 [indistinct ethereal singing] 599 00:32:51,827 --> 00:32:54,758 [Josh] A massive tornado-like sandstorm swallows 600 00:32:54,931 --> 00:32:57,862 these vast forces, burying them alive. 601 00:32:59,379 --> 00:33:02,172 For 2,000 years, this is the story. 602 00:33:02,172 --> 00:33:04,793 An entire Persian army wiped from existence 603 00:33:04,965 --> 00:33:06,172 by Mother Nature. 604 00:33:06,344 --> 00:33:07,896 But did it really happen? 605 00:33:08,034 --> 00:33:11,241 Now, a surprising discovery lets us peer through the sands 606 00:33:11,413 --> 00:33:13,275 of time to reveal the truth. 607 00:33:20,793 --> 00:33:24,068 According to the Greek historian Herodotus, in 525 BC, 608 00:33:24,241 --> 00:33:26,172 an army vanishes without a trace 609 00:33:26,172 --> 00:33:28,137 deep in the Egyptian desert. 610 00:33:28,310 --> 00:33:29,586 But in the centuries since, 611 00:33:29,586 --> 00:33:31,448 many have questioned the account. 612 00:33:32,793 --> 00:33:35,586 Herodotus is considered the world's first formal 613 00:33:35,586 --> 00:33:39,275 historian, but much of what he records in his so-called 614 00:33:39,275 --> 00:33:42,275 "histories" is fantastical, to say the least. 615 00:33:42,275 --> 00:33:46,551 He writes of gold-digging ants in India, a tribe of headless 616 00:33:46,724 --> 00:33:50,482 people in Libya, not to mention flying snakes in Arabia. 617 00:33:52,275 --> 00:33:55,793 So is this army-swallowing sandstorm just another 618 00:33:55,793 --> 00:33:57,965 brazen fabrication? 619 00:34:00,482 --> 00:34:02,965 Well, in the last few decades, there's been a flurry 620 00:34:03,103 --> 00:34:04,586 of digging to find out. 621 00:34:05,965 --> 00:34:10,379 In 1983, American journalist Gary Chafetz spots piles of 622 00:34:10,551 --> 00:34:13,688 rocks marking an ancient trail through the Egyptian desert 623 00:34:13,688 --> 00:34:16,482 70 miles south of Siwa Oasis, 624 00:34:16,482 --> 00:34:18,688 the army's supposed destination. 625 00:34:20,103 --> 00:34:22,655 Chafetz launches an archaeological search, 626 00:34:22,827 --> 00:34:26,862 but comes up empty, finding no evidence of the lost soldiers. 627 00:34:27,000 --> 00:34:28,793 But then, in 2009, 628 00:34:28,793 --> 00:34:30,862 a potentially huge break in the case. 629 00:34:33,000 --> 00:34:36,000 Italian filmmakers, the Castiglione brothers, 630 00:34:36,137 --> 00:34:39,103 claim to uncover human remains, weapons, 631 00:34:39,275 --> 00:34:43,000 and jewelry approximately 60 miles south of Siwa, 632 00:34:43,137 --> 00:34:45,896 proclaiming they have found the missing army. 633 00:34:46,034 --> 00:34:47,896 It's an incredible revelation. 634 00:34:49,379 --> 00:34:51,688 It turns out maybe too incredible. 635 00:34:53,103 --> 00:34:56,275 Many experts immediately cast doubt on the significance 636 00:34:56,447 --> 00:34:59,793 of the brothers' findings, noting that the fragmentary 637 00:34:59,793 --> 00:35:02,758 skeletal remains could not be identified. 638 00:35:02,931 --> 00:35:05,655 Egyptian authorities agree, noting the dig was 639 00:35:05,827 --> 00:35:08,172 completely unauthorized. 640 00:35:08,172 --> 00:35:12,275 But now, Egyptology professor Olaf Kaper has uncovered 641 00:35:12,275 --> 00:35:15,379 groundbreaking evidence that may finally provide answers 642 00:35:15,551 --> 00:35:17,344 to this ancient mystery. 643 00:35:18,689 --> 00:35:23,275 [Dr. Kaper] So the story of The Lost Army of the Persians 644 00:35:23,275 --> 00:35:24,689 is a fantastic story. 645 00:35:24,689 --> 00:35:27,275 It's a story that has really triggered the imagination 646 00:35:27,275 --> 00:35:29,758 of so many people for a long time. 647 00:35:29,931 --> 00:35:33,758 I work on excavations, and while working in the south 648 00:35:33,931 --> 00:35:38,586 of Egypt in the Dakhla Oasis, I found some information that 649 00:35:38,586 --> 00:35:42,689 sheds a completely new light on the story of the Lost Army 650 00:35:42,862 --> 00:35:44,137 of Cambyses. 651 00:35:44,310 --> 00:35:47,000 While we excavated in the Dakhla Oasis, 652 00:35:47,137 --> 00:35:50,448 we found the temple built by Petubastis IV. 653 00:35:51,896 --> 00:35:53,586 We have his full name 654 00:35:53,586 --> 00:35:56,103 on the facade of that gateway. 655 00:35:57,241 --> 00:36:00,655 [Josh] During Persia's invasion of the region in the 6th century, 656 00:36:00,827 --> 00:36:04,172 Petubastis was an obscure Egyptian ruler with a kingdom 657 00:36:04,344 --> 00:36:08,000 deep in the western desert, far from Persian control. 658 00:36:08,172 --> 00:36:11,275 He and his people were always considered minor players, 659 00:36:11,448 --> 00:36:13,965 nowhere near as menacing as the Siwa forces 660 00:36:14,103 --> 00:36:16,793 that the Persian army was, according to Herodotus, 661 00:36:16,793 --> 00:36:18,379 sent to subjugate. 662 00:36:18,551 --> 00:36:21,896 But now, with the discovery of an expansive temple dedicated 663 00:36:21,896 --> 00:36:26,000 to Petubastis, Professor Kaper believes this "minor ruler" 664 00:36:26,172 --> 00:36:28,103 wasn't so minor after all. 665 00:36:28,275 --> 00:36:31,896 And, plot twist, all of this may also finally explain 666 00:36:32,034 --> 00:36:35,137 what really happened to those 50,000 Persians. 667 00:36:36,586 --> 00:36:40,586 We see that he built a temple out in the Dakhla Oasis. 668 00:36:40,586 --> 00:36:43,103 So what could that possibly mean? 669 00:36:43,275 --> 00:36:46,000 And this was, to me, a kind of eureka moment that, 670 00:36:46,137 --> 00:36:50,172 my God, it has something to do with the lost army story. 671 00:36:50,344 --> 00:36:53,344 I believe Petubastis was leading an insurrection 672 00:36:53,517 --> 00:36:54,793 against Persian rule. 673 00:36:54,793 --> 00:36:57,000 The Persians were still in Egypt. 674 00:36:57,137 --> 00:37:00,379 They were controlling towns in the delta, whereas Petubastis 675 00:37:00,379 --> 00:37:03,241 was trying to control part of the south of Egypt. 676 00:37:03,413 --> 00:37:06,344 The oasis provided the inhabited area 677 00:37:06,517 --> 00:37:07,965 just outside Egypt. 678 00:37:08,103 --> 00:37:10,482 That allowed Petubastis to organize his troops. 679 00:37:12,482 --> 00:37:15,482 Professor Kaper's theory is that it's more likely that 680 00:37:15,482 --> 00:37:19,000 King Cambyses sent his army of 50,000 soldiers 681 00:37:19,137 --> 00:37:21,793 to Dakhla Oasis, and not to Siwa Oasis, 682 00:37:21,965 --> 00:37:24,482 the way the story was originally told. 683 00:37:24,655 --> 00:37:26,586 But the same question remains. 684 00:37:26,758 --> 00:37:30,103 Was the Persian army really wiped out by a sandstorm? 685 00:37:30,275 --> 00:37:32,448 Well, now, the dust is about to clear. 686 00:37:40,000 --> 00:37:41,551 Do you ever remember something from the past that never 687 00:37:41,724 --> 00:37:42,965 happened at all? 688 00:37:42,965 --> 00:37:45,379 Well, you might be suffering from the "Mandela Effect," 689 00:37:45,551 --> 00:37:48,689 a phenomenon where large groups of people remember things very 690 00:37:48,689 --> 00:37:51,034 differently from how they actually happened. 691 00:37:52,206 --> 00:37:54,172 It's named after Nelson Mandela, 692 00:37:54,344 --> 00:37:59,000 coined in 2009 after researcher Fiona Broome observed that many 693 00:37:59,172 --> 00:38:02,586 firmly believed Mandela died in prison in the 1980s, 694 00:38:03,896 --> 00:38:05,793 when he was still very much alive. 695 00:38:07,000 --> 00:38:08,896 Mandela's alleged death became 696 00:38:09,034 --> 00:38:11,655 just the first of many other examples. 697 00:38:11,827 --> 00:38:14,586 They run the gamut from the Monopoly Man's monocle -- 698 00:38:16,034 --> 00:38:17,689 he didn't have one -- 699 00:38:17,689 --> 00:38:20,655 to Darth Vader saying, "Luke, I am your father." 700 00:38:22,586 --> 00:38:26,379 He actually says, "No, I am your father." 701 00:38:26,551 --> 00:38:29,379 You can argue the Mandela Effect shows us that history 702 00:38:29,551 --> 00:38:32,586 isn't written by the victors as much as by your own, 703 00:38:32,586 --> 00:38:34,689 sometimes very faulty, memories. 704 00:38:43,206 --> 00:38:47,517 The sixth century fate of a 50,000-strong Persian army 705 00:38:47,689 --> 00:38:50,517 that was said to be swallowed whole by a sandstorm 706 00:38:50,689 --> 00:38:52,344 has long been debated. 707 00:38:52,517 --> 00:38:55,965 Professor Olaf Kaper believes he's finally found the truth. 708 00:38:58,000 --> 00:39:02,344 The story of the sandstorm is just impossible to my mind. 709 00:39:02,517 --> 00:39:05,931 Sandstorms are a well-known fact in the desert. 710 00:39:06,068 --> 00:39:08,413 It's a very nasty event. 711 00:39:08,586 --> 00:39:10,517 They make the air thick. 712 00:39:10,689 --> 00:39:11,965 Everything becomes brown. 713 00:39:12,103 --> 00:39:14,413 No light, and you can't see. 714 00:39:14,586 --> 00:39:17,379 A heavy sandstorm is something awful. 715 00:39:17,551 --> 00:39:20,413 It can disorient you, but it doesn't kill you. 716 00:39:20,586 --> 00:39:21,862 It just doesn't happen. 717 00:39:22,000 --> 00:39:24,827 I've traveled in the desert, and I've had many sandstorms 718 00:39:25,000 --> 00:39:27,758 myself in the western desert of Egypt, 719 00:39:27,931 --> 00:39:30,482 where they can last for days. 720 00:39:30,655 --> 00:39:33,896 They can be a major hazard for any expedition, but it doesn't 721 00:39:34,034 --> 00:39:35,206 kill an expedition. 722 00:39:35,379 --> 00:39:39,034 It doesn't mean that the expedition gets covered 723 00:39:39,206 --> 00:39:40,758 in a huge sand dune. 724 00:39:40,931 --> 00:39:44,620 It takes years for a sand dune to cover, say, 725 00:39:44,793 --> 00:39:46,517 a building or a village. 726 00:39:46,689 --> 00:39:51,241 It doesn't happen to a marching army or 50,000 men. 727 00:39:51,413 --> 00:39:52,965 That's simply impossible. 728 00:39:56,965 --> 00:40:00,103 Professor Kaper thinks the Persian army wasn't crushed 729 00:40:00,275 --> 00:40:03,724 by a sandstorm, but it was still crushed by the forces 730 00:40:03,896 --> 00:40:05,586 of the rebel Petubastis. 731 00:40:05,758 --> 00:40:09,068 Once underappreciated, now not so much. 732 00:40:11,551 --> 00:40:16,172 [Dr. Kaper] I believe the lost army went out from Thebes towards Dakhla, 733 00:40:16,344 --> 00:40:18,379 and Petubastis is there waiting. 734 00:40:20,482 --> 00:40:22,793 And there must have been a battle somewhere 735 00:40:22,965 --> 00:40:26,000 in the desert, and that's why the army never came back. 736 00:40:34,275 --> 00:40:37,827 The terrain is suitable for a small army 737 00:40:38,000 --> 00:40:39,896 defeating a larger army. 738 00:40:40,034 --> 00:40:43,620 After the event, the Persians tried to distort 739 00:40:43,793 --> 00:40:46,241 the actual course of events 740 00:40:46,413 --> 00:40:50,275 and change it into an act of God, an act of nature, 741 00:40:50,448 --> 00:40:55,344 where a sandstorm stopped the course of the army, 742 00:40:55,517 --> 00:40:58,000 because the humiliating defeat 743 00:40:58,137 --> 00:41:02,310 of the Persian army was not something that, well, 744 00:41:02,482 --> 00:41:04,344 people wanted to be advertised. 745 00:41:06,275 --> 00:41:10,034 So, Professor Copper believes history got it all wrong. 746 00:41:10,206 --> 00:41:12,931 The story of the killer sandstorm is false -- 747 00:41:13,068 --> 00:41:15,827 it was created as a smoke screen, or I guess, 748 00:41:16,000 --> 00:41:18,344 sand screen, to protect the reputation 749 00:41:18,517 --> 00:41:20,379 of the defeated Persian army. 750 00:41:20,551 --> 00:41:23,586 It's a compelling explanation, but currently it remains 751 00:41:23,758 --> 00:41:24,931 just a theory. 752 00:41:24,931 --> 00:41:27,896 No definitive Persian remains have been unearthed, 753 00:41:28,034 --> 00:41:31,482 but Professor Kaper is hopeful to find them, searching through 754 00:41:31,655 --> 00:41:35,172 the vast desert for that single grain of truth. 755 00:41:35,344 --> 00:41:38,448 I'm Josh Gates, and I'll see you on the next expedition.