Hranice Abyss
Hranická propast
The deepest flooded cave in the world, with explored depths of over 400 meters underwater and a turquoise pool hidden in the forest.
Hranice Abyss is a giant sinkhole in limestone. About 69 meters below the surface, a bright green pool is visible, and robotic probes have measured its underwater depth at over 450 meters, making it the deepest known flooded cave. It lies in the Hůrka Nature Reserve, with viewing platforms and trails, and is free to visit. The nearby Zbrašov Aragonite Caves can be visited at the same time. It is about 40 km from Olomouc.
Opening hours
All day
Nearby sights
- Zbrašov Aragonite Caves
- Helfštýn Castle
- Olomouc Zoo
- Basilica of the Visitation, Svatý Kopeček
- Hradisko Monastery
- Šternberk Castle
- St. Wenceslas Cathedral
- Olomouc Museum of Art