UÁhisar is a troglodyte village situated 4 km east of GŲreme. It is famous for the huge rock formation once used as a fortification. This extraordinary rock is the highest peak in the region and offers a magnificent panoramic view of the whole of Cappadocia with Mt. Erciyes in the distance.
The Citadel, carved out and tunnelled by the cave-dwellers of the past, and concealed from view and used for defence purposes, has now been destroyed by erosion, revealing the inner honeycombed architecture. A secret tunnel from the castle to the river bed 100 m below, hewn out in order to provide the water supply in the event of siege, has been recently discovered.