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Lac Souterrain de St-Leonard

277 reviews

#1 of 2 things to do in St-Leonard

Tours, Outdoor Activities, More

St-Leonard, Switzerland

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Travelers talk about

“underground lake”(26 reviews)
“boat ride”(8 reviews)
“visit takes”(2 reviews)

Lac Souterrain de St-Leonard
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1 - 10 of 51 reviews

KPR_13

Paris, France

2612

Reviewed 3 days ago

Brief tour with unenthusiastic guides

The Lake itself is of some interest if you like this kind of thing but the tour is very short, consisting of being rowed from one end to the other and back again, and lasts only about 25 minutes in total. Our guide was clearly...More

Date of experience: July 2019

Thank KPR_13

andydewey2017

San Francisco, California

Reviewed 1 week ago via mobile

Amazing Underground Lake

If you are in the area be sure to spend an hour here. The water is crystal clear, and the sensation of being on a boat on a lake under a mountain is pretty unique! The boats hold up to about 40 people. The guides...More

Date of experience: July 2019

Thank andydewey2017

odontuyaa

Lausanne, Switzerland

Reviewed 4 weeks ago via mobile

Interesting place

A regular boat tour in the lake continues about 25 minutes with French, German and English speaking guide. The lake itself is super clear even one can see the bottom in shallow areas. Keep in mind that is bit chilly. The average temperature is 10C...More

Date of experience: June 2019

Thank odontuyaa

Tufus92

Bucharest, Romania

35744

Reviewed May 3, 2019

The largest underground lake in Europe!

Located near the Sierre, Canton of Valais, Switzerland, this lake is the largest underground lake in Switzerland. He can visit between March 15 and October 30, and visit his worth. The visit takes about an hour and there are guides for 4 languages.

Date of experience: March 2019

1 Thank Tufus92

kiani_bilal

Ferney-Voltaire, France

Reviewed April 22, 2019 via mobile

Europe largest underground lake

It’s a nice place to visit. The trip costs 10 Chf for 40 minutes of boating inside the lake. I would totally recommend to visit

Date of experience: April 2019

1 Thank kiani_bilal

SenbeiNorimaki

Canton of Geneva, Switzerland

114

Reviewed August 16, 2018

Very nice escape but short

This lake is beautiful and it feels like by going down the stairs that lead to the boats you just completely change settings in a matter of minutes and find yourself in a completely different place. Visited in August when it's hot outside and it...More

Date of experience: August 2018

Thank SenbeiNorimaki

en613

Jerusalem, Israel

103

Reviewed August 13, 2018

A must if you are nearby

The guide said it's a biggest underground lake in Europe. It is very impressive, quiet and gorgeous with unbelievably clean water. The guide spoke 3 languages, French, German and English. He made the visit really interesting and meaningful. We didn't have to wait for anything....More

Date of experience: August 2018

Thank en613

joaov184

London, United Kingdom

17487

Reviewed June 8, 2018

Fairy tale

This beautiful Grotto hides one of the deepest grotto's in Europe. It is unbelievably beautiful and magical. The lady who does the tours is very friendly and tells you the history of the grotto like a fairy tale bedtime story. It is cheap for the...More

Date of experience: June 2018

2 Thank joaov184

SunriseSki

Singapore

741291

Reviewed October 15, 2017 via mobile

Classic for decades, nice and special

Largest natural underground lake of Europe. You visit with small boats and the guides take you in the 260m length of the lake and back in about half an hour, providing interesting information. We went off season, so there was one boat after the other,...More

Date of experience: October 2017

Thank SunriseSki

charliepob

Tadworth, United Kingdom

304118

Reviewed October 11, 2017 via mobile

Short but very interesting

We were staying in Crans-Montana and saw this on trip advisor. It is the largest natural underground lake in Europe. Entry is 10 Francs for adults. You are taken for a tour around the cave, the history is very interesting. Tour lasts about 40 minutes....More

Date of experience: October 2017

Thank charliepob

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