Private Events at the Seegrotte "Lac Souterrain St. Léonard"

In Switzerland, in the heart of Valais, between Sion and Sierre, is the largest natural underground lake in Europe. With a length of 300m and a width of 20m, this is the largest natural underground navigable lake in Europe, with a total area of 6000m2.

After the closure of the Seegrotte, from 5:30 PM or 6 PM (depending on the season), we offer your company outings, clubs, associations, or class reunions various evening programs.