1200m. Follow the ridge climbing towers 1,2 and 4 direct, and avoiding tower 3 on the left. 30m abseil needed to get down the gendarme. At the top of the rock section climb snow up to the 'weird' cornice/serac barring the way to the summit and avoid/climb it on the right side. The first summit is a foresummit, the real summit is half a mile E along the ridge.