The Kysak Cave is undoubtedly one of the most significant natural monuments of the immediate vicinity of the municipality. It was discovered during works in a local quarry around 1913. The cave hides a small labyrinth of corridors with a total length of 72 m. Stalactites and stalagmites in the individual halls in the cave have been well-preserved, the walls of the cave are covered with drip waterfalls. Unfortunately, the cave became the target of vandals and most of its beautiful decoration was destroyed. That is also why the cave has never been officially opened to the public. Speleologists call the cave “the Stolen Cave”. The Kysak Cave is one of the most important wintering grounds for bats. These beautiful creatures are being taken care of by the Bat Protection Group, which also collects data on the number of bats living there. So far, the group has identified 7 species of bats having home in the cave. The most famous of these are the lesser horseshoe bat, the greater horseshoe bat and the greater mouse-eared bat.