80m, 2 pitches.
Start on the ledge as for Rebuffat-Baquet. Step right onto the arete and follow the bolts to a finger crack which widens and curves rightwards to a bolted belay ledge. (40m)
Continue following the line of bolts on a fairly blank slab trending left to a corner which holds a few pegs. Climb this engaging corner to the top and finish at a junction with Contamine. (40m)
From here, you can continue to the top via Voie Kohlmann or Contamine. Alternatively, abseil off from here.