Dams and reservoirs

They are among the biggest, heaviest and most impressive structures in the Alps – the dams and reservoirs situated in the Valais mountains. The biggest of them can be admired during guided tours. Made by human hands, they serve as powerful testimony to the importance of hydraulic energy for a mountain canton’s economy. The Valais reservoirs will continue to play a significant role in the future – as Switzerland’s greatest source of renewable energy. A visit is sure to be an unforgettable experience.

Grande Dixence
Hérémence Val d'Hérens Switzerland
Situated at the head of the Val des Dix, Grande Dixence is the highest gravity dam in the world, and something of a record-breaker! The height of its wall, 285 metres, remains unmatched. Its weight, approximately 15 million tonnes, makes it heavier than the Great Pyramid of Cheops. The dam is 200 metres wide at its base. At the top it «slims down» to just 15 metres. The Grande Dixence dam is open to the public from mid-June to the end of September. Four guided tours inside the wall are organised every day. You can also visit our exhibition pavilion and go up to the top of the dam wall on foot or by cable car. Grande Dixence
Hérémence
Hérémence

Grande Dixence

Situated at the head of the Val des Dix, Grande Dixence is the highest gravity dam in the world, and something of a record-breaker! The height of its wall, 285 metres, remains unmatched. Its weight, approximately 15 million tonnes, makes it heavier than the Great Pyramid of Cheops. The dam is 200 metres wide at its base. At the top it «slims down» to just 15 metres. The Grande Dixence dam is open to the public from mid-June to the end of September. Four guided tours inside the wall are organised every day. You can also visit our exhibition pavilion and go up to the top of the dam wall on foot or by cable car.

Location: Hérémence
Height: 285m
Capacity: 400 Mio. m3

Daily viewings with “light and sound show“ from mid-June through late September
Tour begins in front of the exhibition pavilion at the foot of the dam