GOSSI CAVE

This cave is one of the largest in the region; it's 6 km long, but you can only visit 1 km of it. It's cold all year round, so don't forget to bundle up. Dress in your dirtiest clothes, as the floor is very slippery, and you almost have to crawl in some places. It's a succession of galleries, waterfalls and stalactites and stalagmites with evocative shapes that have earned them poetic names, as in all caves of this kind. To be visited only if you're a geologist or on the road.