Saint-Léonard underground lake
The 36th deepest cave in the world
The 101st longest cave in the world
4m · Depth
0.3km · Length
Saint-Léonard underground lake (French Lac souterrain de Saint-Léonard) is located at Saint Léonard in the canton of Valais, Switzerland.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).