The route begins with a fairly steady climb through the forest. A flatter section then leads to the Louvet Hut and the Cirque du Louvet, a welcome break before climbing again toward Lac de Brouffier. You can refill your water at the fountain near the hut.

The ascent, initially steep and wooded, gradually opens up as you reach the Brouffier ridge. The descent, on a steep and technical singletrack, completes the first loop of this figure-eight route.

After passing through the Cirque du Louvet again, the descent continues toward the “câblettes” section. Once at the junction with the road to the pass, tired legs may choose to follow the tarmac for a quicker return to the resort.

Otherwise, the trail softens before a final effort through the Bois Faudant. The first few meters of the climb at the forest’s edge are relatively gentle. Once out of the woods, the final descent is smooth and easy, revealing a lovely view over the Désert hamlet and the Vercors mountains in the background, a perfect way to end the outing.
Marking : Red waymarking No. 3 (Alpe du Grand Serre – Sector No. 1) The routes follow the hiking trail network, with Trail markers placed on directional signposts. In addition to the specific Trail signage, use directional indicators and ground waymarks to help guide your way.
Equipments : Play area, Picnic area, Covered picnic area, Bar, Toilets, Public WC, Car park, Phone box/phone point, Restaurant,

Delicate passages : Steep and technical descent: narrow sections must be crossed with caution. Important! You are in a protected natural area: Please stay on marked trails, take all your waste with you, and keep dogs on a leash at all times. You may also encounter herds and livestock guardian dogs. If you do: - Remove your sunglasses and put away your trekking poles - Avoid walking through the herd; go around it calmly - Remain quiet and passive as if ignoring the dog, which will then calmly continue its guarding duty.

Admission fee : Free access. Free pricing rundown at the tourist office.

Opening : From 01/04 to 30/11. Depending on the snow cover.

Area : Matheysine