On the boulder of Le Tire-au-Cul (red n°58) (boulder to the opposite of Le Lot de Boudins). Sitstart in La Fissure de la Gentillesse with a big flake, traverse to the right, pass the angle with low holds, go up at the crack, continue to traverse with top slopers and exit in Le Tire-au-Cul (red n°58).