Beneath the surface of Turkey lies Derinkuyu, an ancient underground city built to house 20,000 people. But why was it created, and who lived here? Join me as I explore its deep tunnels and uncover ...

Cappadocia, Turkey’s striking landscape ... As the largest excavated underground city in the world, Derinkuyu embodies human ingenuity in adapting to the challenges of a volatile environment ...

Eventually, Matiate could rival the size and popularity of another of Turkey's underground cities, Derinkuyu. Disappearing chickens helped a farmer locate the underground city of Derinkuyu.