Accompanied by a guide, visitors interested in the wild subterranean world can explore the Mala Boka and Srnica caves.

Comprising a complex system of caves, the karst world includes the Kanin and Rombon mountains, where one of the world's deepest pits is situated. The mountainous karst world overlooking Bovec is a paradise for speleologists, who eagerly explore natural phenomena and search for new tunnels connecting the cave systems.