Jama Pekel. Entrance into the cave is in 600 m long pocket valley on the south edge of karst area of Ponikve. It is situated 4 km north from Šempeter in Savinja valley. Cave system was created by the water of Ponikvica, which flows as a 4 m high subterranean waterfall into the cave open for tourists. Outflow from the cave is Peklenščica brook.