Where is the underground city of Derinkuyu?
Correct answer: Turkey

Roger Hepworth
Been there. Found it a bit frightening.

Ria
was there last year, pretty amazing place

Barb@71
Gobeckli Tepe is also in Turkey

Axel
So cool 😎

Hud
Cappadocia is a very unusual place… a must visit! Especially the hot air balloons in the early morning & of course the underground cities & cave hotels….

Sis
Fasinating 🤔

Rose
Roger Hepworth, more?