100m to the West of Le Plein des Sens, between Le Chemin des Arcades and Le Chemin de la Roche qui Tourne. Start in the pit (without any convention) and exit to the left as for Djoumba by a dyno without touching the small boulder on the left.
Access : from the parking lot on the road from Courances to Arbonne, take Le Chemin des Côtes de Courances between the plots 36 and 37 up to Le Chemin des Arcades. Follow that one to the right for 150m and take a path for 60m in direction of the South (plot 34); the overhang is then on a small hill. The problem has been brushed by Thierry Vasseur and Sébastien Marchant, and rediscovered later.