Park in the car park on the lake road at the intersection with the beach road in Xonrupt-Longemer, near the campsite.
(S/E) Cross the road using the cycle path and follow it (lake road) south-east to the Envers de Longemer campsite.
(1) Leave the track on the right (cross), which will be the return route, then turn right and follow the path that climbs into the forest towards the south, marked with a red triangle. (The path is quite steep).
(2) At Roche des Vieux Chevaux, you will have a view of Lac de Longemer. The most difficult part of the hike is now behind you. Continue along the trail towards the south-west.
(3) At the crossroads, follow the yellow disc signs south, then take the hairpin bend on the right towards the old mine (which is signposted).
(4) At the old copper mine, retrace your steps and take the path on the right that descends to Lac de Lispach.
(5) Go around Lac de Lispach on the right (yellow circle) until you reach the dam.
(6) At the dam, turn back and go straight ahead in a north-westerly direction to rejoin the Chemin Ehlinger (forest path). Follow this path in a north-easterly direction until you reach the small pass of the Mine crossroads.
(7) Go downhill and take the path marked with a green cross heading northeast until you reach the campsite. At some point, you will see a sign for "Grotte des fées" on your right. You can go there; it is about a hundred metres away. It is not marked on the IGN map. Then retrace your steps and continue along the path marked with a green cross.
(1) At the crossroads by the campsite, turn left and follow the cycle path to the car park (S/E).
