Hell Cave (Jama Pekel) Just a few kilometres from the Roman necropolis, water has created a unique phenomenon through the centuries - a Karst cave with numerous stalactites and stalagmites of all shapes, walls coated with calcium sendiment and confluence of two brooks.
The cave at the edge of the Ponikovski karst area acquired its name from the interesting rock entrance that looks like the Devil.
It is composed of two levels, and the lower level is crisscrossed by many streams. The main entrance tunnel ends in a siphon with the shape of a narrow high tunnel with small lakes and waterfalls.
The bones of a Neanderthal man were found in the cave, and the cave was already open to visitors in the 19th century when parties were held in it.
A forest education trail leads past the cave.
 
Special feature:
With a four-meter drop, the highest underground waterfall in Slovenia’s tourist caves.