Lac de Mauvoisin
Lac de Mauvoisin is a high mountain reservoir at an elevation of 1.961m (6,433ft) above the sea level, located in the Valais region of Switzerland.
![Lac de Mauvoisin](https://www.dangerousroads.org/cache/images/900x/2/lacdemauvoisin0-6cb0f874.jpg)
The road to the summit is asphalted in very good conditions. It was built between 1954-1958. The climb includes some steep sections and a couple of tunnels. The Mauvoisin arch dam is an impressive structure, with a height of 250 m. At the lake, a gravel road climbs up to the Cabane de Chanrion, a high mountain hut at an elevation of 2.471m (8,106ft) above the sea level. This road is only accessible in summer for people with special communal authorization.