About LAC SOUTERRAIN SA

The "Lac Souterrain de St-Léonard" is located in Switzerland, between Sion and Sierre, in the heart of the Valais Alps. A privileged witness to the formation of the Alps, this navigable underground lake nestles in the hillside between 30 and 70 meters below the vineyards. With a length of over 300 meters, it's the largest natural, navigable underground lake in Europe.

Aboard our boats, you'll have the opportunity to discover the lake from a different angle.

Aboard rowing boats that can accommodate up to 40 people, multilingual guides take you on a tour of this fascinating world in complete silence. During a guided tour lasting over 30 minutes, you'll glide over the clear waters of the lake and learn to decipher its mysteries.

We look forward to your next visit.

PRODUCTS, SERVICES

We offer a guided boat tour lasting just over half an hour, with commentary in French, German and English.
Photography is permitted, but swimming and diving are prohibited.
Kiosk - Souvenirs - Refreshment bar - Snacks
Superb terrace
Pets allowed