Avoid leaving the paths and keep your dog on a leash from April to July.
On an isolated boulder on the left of the road when coming to the parking lot. Sitstart to the left, tarverse under the overhand and exit on the "nose" of that one.
Access
From the parking lot, follow Le Chemin des Longs Vaux to the West for 60m, take a small path to the left and go up the slope for 50m : the boulder is near the top of the hill.