Na Pomezí Caves are the largest cave system in the Czech Republic resulting from the dissolution of marble, ie. Crystalline limestone. Narrow and in places high corridors, which are crosses into smaller domes. For these caves are typical cascade of massive jagged stalactites.
The total length of the cave system is about 1000 meters in length, hiking time is 530 m tour takes 45 minutes. The average temperature in the cave is 7.7 ° C, air humidity 99%. Since 1958 the caves and their surrounding areas classified as protected areas (now a national natural monument).