Abhishek Rathi 's Interesting Stuffs

Derinkuyu Underground City is an ancient multi-storey underground city in Derinkuyu District, Nevşehir Province, Turkey.  It reaches a depth of 85 meters (279 ft), large enough to accommodate 20,000 people along with livestock and food stores.  It is the largest excavated underground city in Turkey and one of several underground complexes found throughout Cappadocia.