This underground settlement is in the center of the town of Özkonak, 14 km north of Avanos and hollowed out into the west slopes of the Idis Dagi ,where the tufa layers are mainly found. Although there is only one floor, it covers a large area and the spaces are connected to each other with tunnels. Unlike the important underground cities of Kaymakli and Derinkuyu, there are very long and narrow holes to enable communication between the levels.

When the entrances of neatly hollowed chambers were closed, those narrow (5 cm in diameter) and long holes were used also for ventilation. Unlike the other underground settlements, just in front of the millstone doors, on the ceiling of the tunnels, there are small holes which were made to pour hot oil on the enemy, or to spear them. As in the underground cities of Kaymakli and Derinkuyu, in this underground settlement are a ventilation shaft, a well, a winery and millstone doors.