On an isolated bouder on the northeastern side of the hill called Châteauveau. Sitstart at the right of the roof with a big ledge, climb the ledge at the right side of the roof and exit on the prow.
Access: from Le Chemin de la Charme, take the former trace of the 25 Bosses path in a westerly direction. The boulder is on the left on the slope of the first hill.