History

The Derinkuyu underground city is a 2500-year-old ancient multi-level underground city in Turkey, extending to a depth of approximately 60m. It is large enough to have sheltered as many as 20,000 people together with their livestock and food stores [more: https://t.co/B2rSHulmWt] pic.twitter.com/6Ye44AxabK

— Massimo (@Rainmaker1973) September 24, 2020