50m, 2 pitches. Start just left of Ultramontane at base of the SE arete of The Stack (Where Crumbling Cranny leaves the LH branch of the Blackspout. Climb the groove to an overlap then pull right and follow the right side of the big flake to its top. Swing up left to a foot ledge then gain and follow the superb quartz dyke in the wall above until precarious moves lead right to a groove and easier ground (35m, 5c). go left and finish up the groove, as for Ultramontane (15m, -)or follow easy ground on the right to the plateau.