The 15th-century counterfeiters used a specialized oven to produce fake coins from copper, which were then silvered.
The caves contain one of the largest concentrations of fossilized bones of Pleistocene fauna in the Czech Republic.
Unlike most dripstone caves, these formations are primarily composed of opal and chalcedony, making them unusually hard.
The site was sealed off by natural debris for thousands of years until being exposed by limestone mining.
Excavations in the 'Rose Passage' uncovered human remains dating back to the late Stone Age.
The Koněpruské Caves represent the longest cave system in Bohemia, spanning three levels and over two kilometers in length. Located within the protected landscape area of Bohemian Karst, the caves are formed in Devonian limestone approximately 400 million years old. The upper level served as a secret 15th-century counterfeit mint where alchemists produced illegal coins. Unique to this site are the 'Koněprůšek roses,' opal-rich formations that resemble small floral clusters. The cave system was discovered accidentally by quarry workers in 1950. Visitors descend approximately 40 meters below the surface to explore the accessible sections. The site remains a significant paleontological location, yielding fossils of prehistoric mammals. The cave climate remains constant at approximately 10 degrees Celsius throughout the year.
The main hall, known as the 'Prošek Dome,' which showcases the most significant dripstone formations.
Wear a jacket or fleece even in summer, as the constant 10-degree temperature feels cold after entering from the outside.
Choose sturdy, non-slip footwear as the limestone walkways can be damp and uneven.
Arrive early in the day during peak summer months to avoid large group queues.
Attempting to visit without checking the daily tour schedule, as entry is strictly by guided tour and limited by group size.
Closed annually during the winter season from November through March.
Touching the cave walls or formations is strictly prohibited to prevent damage from skin oils; photography is permitted without flash.
