Access to the Alpe du Grand Serre station via the D114 road, then eastwards via the D114E towards the Chalets de Poursollet.
(S/E) The start is on the D114E road from a car park in a right-hand bend just after passing a stele on the right in a left-hand bend.
Head south up the road to return to the stone.
(1) Leave the road and follow the very steep slope opposite into the valley surrounded by lush vegetation. Cross the forest, heading to the right. Exit the forest at an elevation of 1938 metres and cross a path coming from the right.
(2) Continue uphill. You will reach a treeless area of stubble and continue on the path heading east. At the foot of the cirque on the right is Lake Brouffier.
(3) Ignore the path leading right towards the lake, to which you will return later, and continue climbing north-east. Follow the path, marked with red markings, through a long stony area heading south-east and then due south. The ridge is opposite and the path leads to the almost red-coloured rocks. Reach the Pas de la Mine with its grassy area on the eastern side.
(4) Turn back along the same path and return to the junction at elevation 2143.
(3) Take the leftmost path towards the east, which descends towards Lac Brouffier.
(5) Reach the lake. The hut is nearby for shelter if necessary and if the weather is bad... Turn back to return to the previous crossroads.
(3) Descend westwards along the path you took to climb up, in the middle of the stubble.
(2) Ignore the path descending to the left and continue towards the forest. Descend the steep valley to return to the stele.
(1) Return to the car park via the road downhill opposite to find the starting point (S/E).