This cave is a popular tourist place. It has some secrets, which are hidden inside. Each tourist who has visited Bojnice castle is going to visit this natural cave, which is located below the castle. Its diameter is 22 meters and the height is 6 meters.
This cave appeared due to precipitation. The water infiltrated through external fractures inside the travertine. The water was destroying travertine and removed it. There are two lakes in the cave of 8 and 12 meters in depth.