On the backside of the boulder of Pourquoi Tant de Haine? (orange n°34), along the 25 Bosses path, in between Querelle de Chapelle and Coup de Torchon. Standing start next to the tree, 3m on the right of the exit of Paul Haine, with the two hands in a horizontal crack, traverse to the left with low holds, pass the angle and exit in the left facet.