Access the car park near Les Jonquilles campsite. See § Practical Information.
(S/E) Opposite the campsite snack bar, take the path on the left marked with a Red Triangle. Do not rely on the sign for Roche des Vieux Chevaux (0h30); allow for a 1-hour climb instead. After a very steep section, the slope levels out and, once you reach the top of the path, the rock is on your left.
(1) Take care, as the rock can be slippery in wet weather. In July/August, enjoy the berries on the Brinbelliers whilst admiring the view.
Set off from the rock, following the Red Triangles on a gentle climb. As the descent begins, you’ll reach a crossroads.
(2) Take the path on the right that goes downhill, marked with a Red Disc. Be careful, the descent is full of small, unstable rocks. Admire Lake Lispach on your left. You’ll arrive at the multi-way junction at Collet de la Mine.
(3) Turn right to join the “Basse de la Mine” path, marked with a Green Cross. Follow this fairly technical descent until you reach the car park (S/E).