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Ice diving

Shivers of excitement guaranteed by this unique experience. Keen divers particularly enjoy this special kind of diving under the ice in the waters of Lake Lioson, perched at an altitude of some 1'850 metres.

In the winter a thick layer of snow-covered ice hides Lake Lioson from view. The surrounding snow-capped mountains which form an encircling backdrop around the lake create an incredible arena for all visiting divers. Once underwater the divers, guided by way of a lead, discover the magical spectacle of the lake’s clear waters - the play of light on air bubbles formed by the ice and the fish that have been trapped therein. On good days, it’s even possible to admire the mountains which are reflected in the depths of the lake!

Diving under the ice at Lake Lioson is made possible by using three ice holes kept clear for the whole season. Diving weekends are regularly organised throughout the winter season. Planned by diving clubs or other associations, they are open to all holders of a valid divers’ licence.

The restaurant and its dormitories on the edge of Lake Lioson offer lodgings and shelter. Supplies are delivered by way of a pisting machine. For divers, the ascent to the lake is done on snowshoes, the descent on a sledge.

Geographic situation

Zoom map


Restaurant du Lac Lioson
1862 Les Mosses
Phone +41 (0)24 491 11 44
Fax +41 (0)24 491 20 04



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Online Reservation


The Tourist Office is open during the following times - End of the winter season :
From 3. to 17. April 2017 and from 29. May to 18. September 2017 : Mo-Fr 8h-12h and 13h30-17h30 / Sa-Su 9h-14h
 From 18. April to 28. May 2017: Mo-Fr 8h-12h and 13h30-17h30 / Sa-Su geschlossen
Bank holidays : 9h-14h

Office du Tourisme Les Mosses - La Lécherette, Route du Col des Mosses 106, 1862 Les Mosses, Suisse - Tél. +41 (0)24 491 14 66 - Fax +41 (0)24 491 10 24 - info@lesmosses.ch
Association Touristique Aigle-Leysin-Col des Mosses, Réalisation MySwitzerland & DidWeDo*