Derinkuyu Underground City
Who first carved Derinkuyu into the rock, when did they begin, and how did its builders engineer effective ventilation and manage the excavation and removal of so much stone for a refuge meant to hold thousands?
possibly begun c. 8th-7th century BCE, substantially expanded and used through the Byzantine era · Derinkuyu, Nevşehir Province, Cappadocia, TurkeyAdded July 2026