Online booking compulsory
In order to guarantee access to the site, we invite you to book your visit now by clicking on the button below.
A multilingual guide will reveal the mysteries of the lake and its origins
Experience magical moments in a unique and exceptional setting
Share this exceptional setting with family, friends, or for a team-building event
Fun and educational tours for school groups in a safe environment
The “St-Léonard Underground Lake” is located in Switzerland, between Sion and Sierre, in the heart of the Valais Alps. A unique testament to the formation of the Alps, this navigable underground lake lies nestled in the hillside at a depth of between 30 and 70 meters beneath the vineyards. At 300 meters long, it is the largest natural, navigable underground lake in Europe.
Since the cave is completely submerged, all tours take place aboard rowboats that can accommodate up to 40 people.
In complete silence, multilingual guides will take you on a journey of discovery through this fascinating world. During a 30-minute guided tour, you’ll glide across the crystal-clear waters of the lake and learn to unravel its mysteries.
We look forward to your next visit.
ONLINE BOOKING IS COMPULSORY
Un concert acoustique intime avec Andrea Bignasca, dans l’atmosphère unique du Lac Souterrain
