Bear Cave — 'Jaskinia Niedźwiedzia' in Polish — is the longest cave in the entire Sudeten Mountains and one of the most stunning in Poland. Hidden beneath the slopes of Stroma hill in the Śnieżnik Massif near the village of Kletno, it dazzles visitors with spectacular stalactites, stalagmites, cascades, draperies and giant flowstone formations. Discovered by accident in 1966 during marble quarrying, it quickly became one of the region's greatest natural treasures.

The cave's passages stretch for about 4.5 km across three levels, with some chambers reaching ceiling heights of up to 15 metres. A steady cool temperature prevails underground year-round, making it a refreshing escape on hot summer days and a fascinating destination even in winter. Around 700 metres of passages are open to visitors, offering an immersive underground experience full of colour and dramatic geology. The atmosphere is magical at any time of year.

• Kletno village (parking near the cave entrance) — short walk to the entrance, easy

• Open year-round except Mondays and Thursdays (open Thursdays from May to August)
• Guided tour duration: approx. 45 minutes
• Cave entrance at 800 m above sea level
• Bring a warm layer — the cave is cool inside regardless of season
• An exhibition building next to the cave displays prehistoric animal fossils found here

During excavations in 1967–1970, over 20,000 prehistoric animal bones were recovered from the cave — nearly 90% belonging to the cave bear, the creature that gave this extraordinary place its name and its legendary status.