The Hotton Caves: an underground jewel of Wallonia

13 November 2026

A unique shape, a unique story of discovery. Slippery stairs for children! But they are well warned by a perfectly bilingual guide.

Just a stone's throw from Durbuy, the Hotton Caves are among the most remarkable in Wallonia. Discovered in 1958, they extend over nearly 6 kilometers of underground galleries, part of which is open to the public. Their unique feature? They descend to a depth of 70 meters and are traversed by an underground river whose roar can be heard throughout the visit.

The descent is made in stages: you pass through impressive chambers, adorned with delicate and varied concretions, formed drop by drop over millennia. Discover extraordinary visuals, such as the cave's draperies, where the mineral shapes resemble suspended veils.

Guided tours (available in French, Dutch, and English) offer insights into the geological formation of the caves and their relatively recent discovery. They also provide an opportunity to understand the role of water in creating these underground landscapes.

The Hotton Caves are also a listed site, recognized for their scientific and geological interest, but also for the richness of the underground fauna they shelter.