On the right face of the roof as for Unplugged. Sitstart in the overhang with a ledge, take a bidoigt right hand and exit by the wall above.
Access : follow Le Chemin de Melun au Vaudoué for 500m, turn left at Le Chemin du Rocher Noir and go up the hill on the right; the boulder, partially underground, is just left of a big roof visible from the path.