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Emosson dam (1930m)

Constructed between 1969 and 1975, the Emosson dam is situated at the Col de la Gueulaz and is the second largest dam in Switzerland in terms of its capacity (227 million cubic metres). Its 180 metre wall makes it the 3rd highest dam in Valais, after the Grande-Dixence and Mauvoisin dams.

Guided tours

Visit from 1 to 15 people

Registrations are only done on the spot and the same day at the information pavilion of the dam.

Dates: Wednesday to Sunday from July 1st to 15th, then daily until September 2nd.

4 visits per day, at 10:00, 11:30, 14:00 and 15:30

Duration: approximately 1h15

Notes: Visits are made only by good weather and from a registered person.
Warm clothes and good shoes are recommended.
Visits may be canceled or staggered depending on the needs of the dam operation.

Prices: Adults from 16 years: 10 CHF / Student / AVS: 8 CHF / Children from 6 to 15 years: 6 CHF / For children under 6 years old.
Groups from 15 people

Prior reservation is required from VerticAlp Emosson , +41 (0) 27 769 11 11.

Price: CHF 300.- (maximum 30 people)

Duration: about 2h

Possible languages: French, German, English and Spanish (not guaranteed)

Notes: Provide good shoes and warm clothes because the temperature is cool inside the dam. For safety reasons, children under 5 years old can not access the gallery inside the dam.




Emosson is situated on the route of the Tour du Ruan ( - in French only) and is the starting point for several hikes:

Walking maps of the region are on sale at the Emosson information office, and at the Finhaut and Les Marécottes Tourist Offices.



Fishing permits for the Lac d'Emosson are on sale at the "restaurant du barrage d'Emosson" (+41 (0)27 768 12 74).

  • CHF 30.- / day
  • CHF 50.- / 2 days

Can also be bought online:


Refreshments and accommodation

Emosson dam restaurant and hostel



By car and by coach

  • From Switzerland: Martigny - Col de la Forclaz - Finhaut - Emosson/Col de la Gueulaz
  • From France: Chamonix - Col des Montets - Finhaut - Emosson/Col de la Gueulaz

The road is open in the summer only (from mid-May to mid-October, subject to weather conditions). More info

By public transport

By train, taking the Mont-Blanc Express to Finhaut. From end of June to start of September, there is a regular bus service from Finhaut to the dam. Check the timetables here or on

Using VerticAlp Emosson

Various visitor transport services from Châtelard-Village also go to the crown of the Emosson dam. More info here or on

On foot

Allow about 2 hours from Finhaut (800m total ascent)


The dam is inaccessible in winter as the road is closed for safety reasons (snow, avalanches). More info


More info