Overhang underneath the North face of the Eastern hill, 20m to the east of blue n°31. Sitstart without a crash-pad at the bottom of the overhang, reach a good hold and climb the overhang, continue to the left using vertical holds and exit on the large slab, as for B.Traven.
NB: an exit further to the left, at a small dead pine tree, is also possible.
From the Mont Sarrasin car park, follow the main path north for 250m, then take the path on the left marked "chemin rural n°24 derrière le mont sarrasin" for around a hundred metres, the problems are on the back of a large boulder clearly visible on the left.