On the boulder of the traverse of Petit Sept, underneath the Arcades (aqueduct), 150m to the East of the "Duromal" sector. Start at a conch with the two hands in an undercling, dyno right hand to a sloper and exit above as for Là-Bas.
NB: this problem was graded 8b but it's (much) easier for tall climbers. The grade is between 7c and 8b, depending on your height. With a kneepad the difficulty can be downsized to 7a!