80m. Basically the East face of Perseverance Rib. Start at a ledge about 20m up the gully bounding the left side of Perseverance Rib.
Follow a shallow turfy groove/ramp up the East face of Perseverance Rib. Climb through a tricky steep chimney (crux) than follow the turf to a steepening to finish on the buttress crest.