Underneath Épitaphe, in the South face, to the East of La Route de la Perspective de Rochefort. Sitstart without crash-pad in the pit, climb the overhang without touching the small boulders and exit at the top.
From La maison forestière de Barbizon, follow La Route de la Perspective de Rochefort up to a pass; the boulder is on the left, 20m under the crest.