Discover a fascinating world in the heart of the mountain within a unique atmosphere – a fortress hidden beneath the Alps.
Built between 1940 and 1943, and modernized and adapted for a potential nuclear conflict during the Cold War, the structure was used by the Swiss army until 1998. More than 600 meters of galleries are carved into the mountain. Completely invisible from the outside, the fort was able to house 300 men.
During winter, tours of the fort take place every Saturday at 5.30pm from 27 December 2025 to 25 April 2026 inclusive.
Please arrive 15 minutes before the tour starts at the fort entrance.
Private group tours are available upon request, subject to guide availability.
Please call +41 (0)79 628 88 52.
Lignes
12.271
Orsières -> Champex, swimming pool
Informations
12.271 Orsières to Champex swimming pool, recommended departure at 1.30 pm from Orsières station – arrival at 1.45 pm at Champex-Lac swimming pool, then a 5-minute walk to the fort 12.271 Champex-Lac swimming pool to Orsières, recommended departure at 3:58 p.m. from Champex-Lac swimming pool – arrival at 4:18 p.m. in Orsières with the RegionAlps train (departing Martigny at 12:51) and at 16:22 to Martigny.
CHF 10.80
Adult (full price), bus fare from Orsières to Champex, swimming pool
CHF 5.40
Adult (half price), bus fare from Orsières to Champex, swimming pool
The temperature inside the Fort is between 10 and 12°C. Please bring warm clothing and sturdy shoes.
