One of the underground cities of the region referred to earlier is situated at the village of Do?ala on the south slope of Erta? hill, seven km. to the west of Derinkuyu.
All the entrances to this are blocked with the exception of one air duct which is barely wide enough for one person to pass through. The interior, though partially fallen in and blocked, is very interesting.
As at Derinkuyu there are stone doors, storage chambers, bedrooms, water tanks and three halls placed side by side and with niches at both ends. The first and second storeys are accessible, but the storeys below are now flooded so that it is impossible to ascertain the extent of the city and the number of its storeys.