Left problem on the west face of the boulder after Citadelle. Start to the right of Le Bastion (droite) with the obvious pocket left hand and a small tortoise shell crimp on the prow. Morpho. NB: the rock on the prow is very good but care needs to be taken with some of the footholds.
Access
Just right of Le Chemin de La Chapelle-la-Reine à Larchant, 100m after the crossing with La Route des Bois d'Hyver.