Derinkuyu Underground City is located in the homonymous Derinkuyu district in Nevşehir Province, Turkey. It is on the road between Nevşehir and Niğde, at a distance of 29 km from Nevşehir. This is a very interesting link.
Cappadocia is a historical region in Central Anatolia, largely in Nevşehir Province, in Turkey. In the time of Herodotus, the Cappadocians were reported as occupying the whole region from Mount Taurus to the vicinity of the Euxine (Black Sea).