The cave system of the underground river Punkva between the Pustý žleb and the famous Mococha chasm makes part of the longest cave system in the Czech Republic. The sightseeing track leads through a complex of huge domes with rich stalactical decoration towards the bottom of the Macocha chasm in the depth of 138 m and then continues with the electric boats in the Macocha water domes on the underground Punkva river. During the boat trip we can also admire the „Masaryk Dome“ – one of the most beautiful cave spaces of Moravský kras (Moravian Karst).