Dim Cave The Dim Cave is located on the slope of Cebel-i Reis Mountain, northeast of Alanya and 242 meters above sea level. It is the second largest cave in Turkey which has been opened to visitors since 1998. The Dim Cave, a natural and karstic cave is formed by the carbonic acid rich rain and snow waters running through faults and joints of limestone rocks. Tectonic movements also play an intrinsic role in its formation as well.Dim Cave is located in the Middle Taurus Mountains at Cebel Reis, a major fault zone traversing NW to SE. A lower level of limestones has been interspersed with shists, at which point old shist comes into view that is not layered and is not porous. The Dim Cave measures approximately 10-15 meters in width and height and about 360 meters long. The inside of the cave is covered by dripstone formations made up of stalagmites and stalactites, which continue from place to place. At the end of this cave there is a small lake, 17 meters deep and 200 square meters on the surface. It only exists if obstructive shale layers do not come up from the bottom, which occurs at times. After the cave tour, some visitors can walk down the slope towards the Dim Creek Valley (Dim Çayı Vadisi) below. Likewise, some visitors can hike to the entrance of the cave by following a footpath from picnic places near Dim Creek.