It is located on a hill above the settlement of Pythagorion, near the monastery of Panagia Spiliani. Its dimensions are estimated at 110x 54 meters and 6.5 meters deep. It stands at an altitude of 94 meters. Its decoration is very impressive due to the formations of the stalagmites existing for centuries in it.
Particularly interesting are the figures drawn on the side walls of the cave, with the one of Centaur to stand out.