Lake Fourchu

Elevation gain: 420 m

Ascent time: 3h30

Start: Alpe du Grand Serre

Difficulty: Medium

Map: Top 25 IGN 3335 OTR Grenoble / Chamrousse / Belledonne

Trail map: “Pays du Valbonnais”

Route

From the Poursollet lake parking lot, follow the GR 50 trail that runs between the chalets and past the Bar du Taillefer. Continue climbing through alpine pastures and beneath the Rocher Culasson, which leads to the Taillefer plateau. Descend slightly to the left to reach Lac Fourchu. Return via the same path.

Details:

This family-friendly hike takes you to the heart of the Taillefer plateau, with its landscapes reminiscent of the Scottish Highlands. In contrast, the surrounding peaks — the Taillefer, Rocher Culasson, and Grand Galbert — create a strikingly alpine backdrop, while distant views open up onto the Oisans mountain range.