Parking access: from La Bresse, head towards the Le Slalom ski resort on the D34.
After 5 km, turn right onto a small tarmac road, the Chemin de Blanchemer, and after one kilometre you will reach one of the two car parks at Lac de Blanchemer.
Initial remark: good footwear recommended.
The GPS track is sometimes unreliable, especially when descending towards Lac d'Altenweiher. Follow the signposts.
(S/E) Take a wide path around the lake on the right until you reach a crossroads with several paths.
(1) A small path (marked with a blue triangle) climbs steeply. Follow it until you reach a wide path called Chemin du Grand Bougre. Continue left on this path for 450 metres. Take the small path on the right (blue triangle) which climbs steeply.
(2) At the crossroads, turn right to reach a tarmac road (Route des Crêtes), cross it and reach the small pass of Rainkopf.
(3) Take the path heading south.
Yellow signpost
During the descent, a viewpoint offers a magnificent view of the lake.
At a crossroads, leave the path that heads right towards Steinwasen and continue on the left.
(4) At Lake Altenweiher, cross the dam and take a path heading east that climbs steadily to point 1226 (viewpoint over the lake during the ascent).
Blue rectangle markings
(5) Turn sharply left and follow theGR®531(blue rectangle markings) to the Rainkopf Refuge.
(6) Continue to small pass du Rainkopf.
(3) Retrace your steps by crossing the road and returning to the intersection you passed on the way up.
(2) Leave the uphill path on your left and continue straight ahead on the path that descends northwards to a tarmac road.
(7) Descend sharply to the left (a small path runs alongside the road).
Yellow disc markings
(8) Leave the road and descend towards the lake and the car park (S/E).
