20m southwest of the crossing of Route Amédée and Route Carnage, clearly visible from that intersection. Sitstart with the crack as for Jus de Pierre (assis) and exit on the slab with the arete left hand.
NB: please do not scrub the moss from the right face, there are no holds under it that make either side of the arete easier to climb and it looks a lot nicer to have it in place.