In 1963, an inhabitant of Derinkuyu (in the region of Capadocia, central Anatolia, Turkey), demolishing a wall of his house-cave, discovered astonished that behind the same was a mysterious room that never had seen; this room took to another one, and this one to another one and another one… By chance the underground city of Derinkuyu was shortage, whose first level could be excavated by hititas around year 1400 a.C.
The archaeologists began to study this fascinating left underground city. They were able to arrive at the forty meters of depth, although one thinks that he has a bottom of up to 85 meters.
At present 20 underground levels are shortage. The eight levels only can be visited superiors; the others partially are obstructed or reserved to the archaeologists and anthropologists who study Derinkuyu.
The city was used for shelter by thousands of people who lived in the subsoil to protect themselves of the frequent invasions that Capadocia underwent, at the diverse times of their occupation, and also by the first Christians.
The enemies, conscious of the danger that locked up to introduce itself inside the city, generally tried that the population left to the surface poisoning wells.