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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

Group tours of the Emosson dam can be organised on request. These must be booked in advance.

Charge: CHF 300 (maximum 30 people)

Duration: approx. 2 hours

Languages offered: French, German, English and Spanish* (*not guaranteed)

Comments: Visitors are advised to wear strong shoes and warm clothing as it is chilly inside the dam. For safety reasons, children under 5 are not allowed into the tunnel inside the dam.

Booking: must be booked in advance through VerticAlp Emosson, , +41 (0)27 769 11 11.

More info: 




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 mid-June to mid-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