St. Beatus Caves offer a spectacular underground journey through millennia of geological history above Lake Thun. Legend says Irish monk St. Beatus slayed a dragon here in 6th century. Today visitors explore 1km of illuminated passages featuring stunning stalactites, stalagmites, and underground lakes in Switzerland’s most accessible show cave.
Cultural Context
Cave steeped in medieval legend of St. Beatus defeating dragon, symbolizing Christianity conquering paganism. Popular pilgrimage site since Middle Ages.
Historical Context
Caves formed over millions of years by water erosion. First explored 1904, opened to public 1906. Used as air raid shelter WWII. Over 14km mapped but only 1km accessible to visitors.





