This region has been home to many civilizations.
If we count them starting from the beginning,
there were the Hittites,
then there were the Phrygians, then the Persians,
the Cappadocian kingdom,
the Roman Empire.
All the people who passed through used them.
They were even in use up until the Ottoman period.
There were no settlements
above ground in Derinkuyu until 1830.
The underground cities were organized to cater for human living.
In other words, for daily life.
And for this, all the resources were available.
Starting with the kitchen, to the pantry, to the living spaces.