Left problem in an overhang on the left of La Route du Mont Aigu, 50m before La Diagonale du Fou, at a bend to the right when coming from the parking lot. Start at the horizontal ledge, climb the overhang to the left, take a bidoigt and mantle up above.
NB: it is also possible, from the bidoigt, to traverse up to the "nose" of the boulder and exit at this point.