Traverse on a boulder with pockets, completly West on the South side of Le Long Rocher, along a small path on ridge leading to the plateau, see map. Sitstart right, pass angle and finish at the end of second face.
The quickest access is to park at the edge of the forest at the end of the Montigny-sur-Loing cemetery (Vallée aux Châtons). Follow La Route du Croc Marin towards the North until its intersection with the Route de la Grande Vallée (400m) and take a small paths that goes up the slope to the right. The boulder is near the top of the ridge.
