Location: Izmir
The Inkaya cave is located at the eastern side of Kocadag which is to the west of Yelki village of Izmir and transportation by land cruiser or tractor from the Yelki village to the vicinity of the cave is possible. Then reaching the cave requires a walk about 20 minutes at a steep and maquis area.

Properties: The total length of the cave is 222 meters and the deepest point in respect to the cave entrance is at -30 meters. The cave is generally horizontal, partially vertical and is dry. In October, the cave temperature is 18ºC at the saloon section and is 22ºC at the final section. From the potteries found in the cave, it is understood that the cave was used for accommodation in historic periods.

Geology – Geomorphology: The cave had been developed inside the Creates aged limestone among some intersecting cracks. After a steep descend, the cave enlarges into a wide saloon. The width of the saloon varies between 2-20 meters and the height of the ceiling is about 5 meters. The floor is covered with ground and rubble. The passages at the edges of the saloon opens into small adorned chambers. The saloon advances to south from an inclined gallery. At the end of the gallery, there is a 7 meter deep shaft descending to the final and lowest section of the cave.