The caves were discovered in 1912 during the construction of a spa building.
The interior aragonite crystals form 'hedgehog' shapes that are unique to this locality.
The caves serve as an important wintering site for several species of bats.
The microclimate is influenced by CO2 gas, which settles in low-lying depressions within the cave.
The thermal mineral water feeding the cave system emerges at a temperature of around 22.5 degrees Celsius.
The Hranice Abyss, located nearby, has been measured to a depth of 473.5 meters, making it the world's deepest flooded karst chasm.
Zbrašovské Aragonite Caves are Europe's only geyser-stalactite cave system, formed by the interaction of atmospheric waters and mineral-rich thermal waters ascending from the depths. Located in the Bečva River valley, the caves are renowned for their unique aragonite crystals, geyser-like stalagmites, and spherical sinter crusts. The underground environment maintains a constant year-round temperature of approximately 14 degrees Celsius. The cave system is directly associated with the Hranice Abyss, the world's deepest flooded freshwater cave, which is located in the immediate vicinity. Visitors traverse a network of corridors and halls carved into Devonian limestones. The site is protected as a National Natural Monument due to its hydrogeological significance. High carbon dioxide concentrations are a distinct geological feature of the lower cave levels.
The main hall featuring the largest concentration of aragonite crystals provides the most distinct photographic opportunities.
Bring a light sweater or jacket as the cave temperature remains around 14 degrees Celsius even in summer.
Wear comfortable, non-slip footwear suitable for wet and potentially uneven limestone paths.
Check the official website for group size limitations and potential short-notice closures due to extreme weather or technical maintenance.
Do not attempt to walk in the lower sections of the cave without a guide, as carbon dioxide levels can become dangerous in those areas.
Closed on Mondays; operations may be limited during the winter season, verify current accessibility on the official website.
Touching the cave formations is strictly prohibited to preserve the sensitive mineral structures. Photography using flash or tripods is generally restricted to protect the cave environment.
