Case postale 75
Rue du Lac 21
CH - 1958 St-Léonard
T 027 203 22 66
F 027 203 22 81
The largest natural underground lake in Europe.
Daily from 18th March to 5th November 2017
The subterranean lake of St-Leonard is located in Switzerland, along the Rhone valley, between Sion and Sierre in the heart of the Swiss Alps.
From 10.00 till 17.00
In July and August from 9.00 till 17.30
Guided tour on a boat with explanations in English, French and German. Other languages on request depending on availability. Duration of the tour around 30 minutes.