Lachat, Mountain summit in Crest-Voland, France.

Lachat is a mountain of the Beaufortain massif in the French Alps whose summit forms two humps at 1,607 and 1,591 metres. Just north of the top lies the Lac du Lachat. Its flanks fall steeply west toward the gorges de l'Arly and north and east toward the nant Rouge valley, while to the south a slight shelf at 1,570 metres leads gently up toward the col des Saisies and the Signal de Bisanne.

The mountain sits along routes that shepherds have used for centuries to move herds between seasonal pastures. These ancient pathways form the foundation of the area's hiking network today.

The name Lachat refers to the mountain's summit, which has two bumps at 1,607 and 1,591 metres. Mid-slope alpages become ski pistes in winter, and mechanical lifts converge on the top, reached by a road from the Crest-Voland ski resort, whose village sits between 1,200 and 1,300 metres above the Arly.

Marked trails depart from Crest-Voland village and lead to the summit through different elevation zones. Trail conditions vary by season, with winter bringing additional challenges to the route.

The summit has two bumps, at 1,607 and 1,591 metres, and the Lac du Lachat lies just to the north of them. South of the top a slight shelf at 1,570 metres gives way to gently rising ground toward the Col des Saisies, where protected peat bogs lie within a nature reserve.