Sitstart on the right, climb Bérézina-Carnage, traverse on slopers up to the jug of L'Abattoir, downclimb that one up to the first foot hold, go up in L'Hélicoptère, traverse to the right up to the slopers of Carnage, downclimb that one to the first foot holds of La Bérézina, go up in that one and exit at the top.
NB : this 8b+ traverse combination has been realized in 2007.