The West Ridge.

From Moncrieff Col traverse around the head of the Volta Névé beneath the ridge of the Main Divide before climbing about 100m of steep but easy rock to gain the upper shelf of the glacier. From the shelf good ledges lead up and east across the North Face of Scylla to give access to the col between Scylla and Charybdis. A short scramble on broken rock leads to the summit. The time to the top from Moncrieff Col is about five hours.