Coming from Alpe du Grand Serre, stay on the Poursolet road for a few kilometres and park in the car park on the left after the memorial to avalanche victims, which can be seen on the right-hand side of the road.
(S/E) Retrace your steps along the road and, at the monument, start the climb up Combe Oursière on the left.
After 300 m, the path turns right into the woods and eventually emerges onto a patch of ground covered with juniper and blueberry bushes.
(1) At the crossroads, go straight ahead. The path on the right is reserved for the return journey.
(2) Take the path on the right, which leads to the hut and Lac de Brouffier, slightly below. This path roughly follows the contour line and descends slightly towards the end to the lake.
(3) At Lac de Brouffier, after a break and a few photos, return by the same route to the first crossroads.
(1) Take the path on the left to descend towards Chênevier. Join Chemin Bégoud.
(4) Take it to the right and, after a good hundred metres, take the path on the right marked Combe Oursière. The path joins the Combe Oursière at about the level of the war memorial.
Turn left onto the short stretch of road to reach the car park (S/E).