At the top of the small valley, in between Poséidon and Zeus. Sitstart at the angle with a marbled crimp left hand and a small crimp right hand by convention and mantle up slighly right on slopers.
NB: a sitstart on the right with the good hold right hand of Boule de Neige d'Autriche is also possible but very morpho (6c/6c+).