On an isolated boulder of Le Bois de Saint-Médard. Sitstart with an oblique crack, traverse under the overhang and exit on the top of the boulder after a big jug.
From the church of Maisse, follow the D837 in direction of Etampes for 300m and park the car at the co-operative. Take a path toward the North and after 200m, turn left along a fence. The boulder is to the left, 30m after the angle.