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.

With a length of around 300 meters this is the largest natural underground lake in Europe which can be explored by boat.

During a 30 minute boat trip on the crystal clear water, you will enjoy the peace of this amazing place while your guide explains  all sorts of fascinating details about the origin and the history of the underground lake.

We look forward to your next visit.

Daily from 19th March to 1st November

From 9AM till 5PM
In June, July, August and September from 9AM till 5.30 PM

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.
Pictures allowed.
Swimming and diving are not permitted.

Amenities
Souvenir Shop
Snack bar, fresh drinks
Nice Terrace - Pic nic permitted.
Free parking lot for cars and tourist coaches.
Euro-relais (camper station) for motor-homes, next to our parking lot.

RATES

Adults Fr. 10.-
Childrens 5 – 16 years Fr.6.-
Groups (20 people or more) Fr. 9.- per person

Childrens up to 5 years free

Access

Concerts and public events