The biggest underground lake that can be navigated in Europe, known as St. Leonard Lake or Lac de Saint Léonard is situated between Sion and Sierre. This captivating water cavern is conveniently reachable. Offers the opportunity, for exploration through a boat excursion. The guides aboard the boats share details, about the caves geology and historical significance.
Lake St. Leonard in Valais is known for its crystal-clear water and impressive underground caves.
Underground St. Léonard Lake
The underground lake, at St. Leonard offers an experience with various types of rocks glistening at a height of ten meters. Their shapes are mirrored on the 6,000 square meter lake surface. Trout gracefully swim in the crystal water sharing the space with the native creature in this hidden realm. The fungus gnat, whose larvae cling upside down to the cave walls.
This subterranean wonder spans over 300 meters in length and 20 meters in width. Since 1949 it has been a tourist attraction welcoming around 80,000 visitors who embark on boat tours across its waters. Legend has it that esteemed speleologist Jean Jacques Pittard was the first to venture into this caves depths.
The lake beckons adventurers to explore its mesmerizing world and marvel at the geological formations within its caverns during boat excursions. Making it a sought after destination, for nature enthusiasts.
More information on visiting times at: Lac Souterrain de St. Leonard
Video Europe’s biggest underground lake
The largest underground lake in Europe is in the southern Swiss canton of Valais in St-Léonard…
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