Dim Cave Dim Cave, the second largest cave in Turkey, is situated on the slope of Cebel-i Reis Mountain, at an elevation of 242 meters above sea level, northeast of Alanya. This natural and karstic cave has been open to the public since 1998. Carbonic acid rich rain and snow waters running through faults and joints of limestone rocks, along with tectonic movements, have contributed to the formation of Dim Cave. Located in the Middle Taurus Mountains at Cebel Reis, a major fault zone that traverses NW to SE, the cave is formed of interspersed limestones and shists. With a width and height of approximately 10-15 meters, Dim Cave extends about 360 meters in length. It is covered with dripstone formations consisting of stalagmites and stalactites that continue from one place to another. At the end of the cave, there is a small lake that is 17 meters deep and 200 square meters in surface area, but it only exists when obstructive shale layers do not come up from the bottom. After touring the cave, visitors can walk down the slope towards the Dim Creek Valley (Dim Çayı Vadisi) below. Alternatively, visitors can hike to the cave's entrance by following a footpath from picnic areas near Dim Creek.