North Ridge.

From Pluto Col climb up the north ridge until, at about 150m below the peak, a traverse across a small couloir to a subsidiary ridge overlooking the main couloir on West Peak can be made. The left side of this ridge is climbed back to the main ridge which is followed to the final slope via a narrow ice ridge. A variation on this route is to climb the first mentioned big couloir to the ridge seen from traverse around to Pluto Col.