Idis about 14 km northeast of Avanos in Nevşehir Province, in the Central Anatolia region of Turkey.

Its larger areas are connected to each other by tunnels, and it contains a pipe communication system reaching each of its levels.

The Özkonak Underground City was discovered in 1972 by a local farmer named Latif Acar, who was curious about where his excess crop water was disappearing to.

Latif discovered an underground room which, when later excavated, revealed a whole city which could house 60,000 people for up to three months.

Just like Kaymaklı and Derinkuyu, Özkonak has a water well, ventilation system, winery and moving stone doors.