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Saint-Léonard Underground Lake

The spectacular and unusual St-Léonard underground lake is the largest such lake in Europe.

300m long, 20m wide and 10m deep, this is the largest navigable underground lake in Europe.
Guided tours of this unusual and mysterious site, lasting over half an hour, are given in French, German, Italian and English.

Practical information

  • Adult : CHF 10.—
  • Children (5 to 15 years old) : CHF 6.—
  • Group from 20 people : CHF 9.—

Useful documents

Contact

Saint-Léonard Underground Lake
Rue du Lac 21
1958 St-Léonard
+41 27 203 22 66

Opening times

Open everyday from 19th March to 22nd September
Monday – Sunday : 10h00 – 17h00
In July and August : Monday Sunday : 09h00 – 17h30
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