Under the lush green landscapes of the Chablais, just an hour from Annecy or Thonon, hides an unsuspected world: the Bex salt mine, the oldest still operating in Switzerland. A fascinating place where time seems suspended, between rock, salt water, and soft light.
500 years of history beneath the mountain
It all began 200 million years ago, when the sea still covered the Alps. As it evaporated, it left behind a treasure: vast salt deposits, now exploited by the Bex mine. Discovered in the 15th century, it still produces 30,000 tons of salt per year, much of which is used for road de-icing.
This underground labyrinth extends over more than 50 kilometers of tunnels. Passionate guides tell the harsh living conditions of the miners, the tools of the past, and the evolution of extraction techniques. A vivid immersion into the history of the “white gold” of the Alps.
The Miners’ Train: the entrance to another world
The visit begins aboard the Miners’ Train, which delves into the heart of the mountain. Within minutes, daylight disappears, replaced by the constant coolness of the tunnels (18°C year-round).
Along the way, visitors discover walls carved by salt water, extraction rooms still in operation, and even a underground restaurant 400 meters deep.
💡 Tip: bring warm clothing and book online – places are limited, especially on weekends.
Tours for every curious mind
- Explosive Tour – An interactive and gourmet path with tastings of salt-flavored products (caramels, chips, salted herbs…).
- TrekkMines “Le Coulat” – 3h30 of sporty exploration in the old 18th-century tunnels, headlamp required!
- Lantern Tour – An immersion by the light of lamps, to relive the atmosphere of miners from the past.
Each route reveals a different facet of the site, between geology, heritage, and adventure. The youngest visitors (from 4 years old) can also participate in the classic visit, safe and accessible to all.
A pioneering mine in sustainable tourism
Certified Swisstainable Level II, the Bex mine is committed to environmentally respectful tourism.
Salt extraction relies on a gentle technique: water is injected into rock layers, then the brine is transported to the saltworks where the salt naturally crystallizes. Local hydraulic energy powers the entire process.
This ecological commitment makes the mine a model of sustainability, without giving up its history or authentic charm.
Post-visit: Sel des Alpes, a souvenir to savor
Before returning to the surface, a stop at the shop is a must. You will find the famous “Sel des Alpes”, pure and slightly iodized, perfect for enhancing a tartiflette or a Savoyard fondue.
Other local specialties await visitors there: honey from the Bex hives, chocolates, craft beers, and salt-based cosmetics. A great way to extend the gustatory and sensory experience.
Practical information
- Address: Route des Mines 55, 1880 Bex (Switzerland)
- Access: 1 hour from Évian / 2 hours from Annecy (A9 Bex exit)
- Opening hours: daily from 9:00 am to 4:30 pm
- Prices: adult 26 CHF / child (6-15 years) 13 CHF
- Temperature: 18 °C year-round
- Duration: about 2 hours
- Booking: www.mines.ch
An experience to live once in a lifetime
Exploring the Bex salt mine means descending into a timeless mineral world, at the crossroads of science, history, and nature.
Between mysterious tunnels, golden glows, and salty scents, this underground escape leaves no one indifferent.
A fascinating journey less than an hour from Haute-Savoie, and an unforgettable souvenir to bring back from the heart of the Alps.
