Follow the larger of the two cracks to the large ledge on the left of the slab.
5m Carry on up diagonally left to a smaller ledge near the side of the slab.
15m Follow the cracks above to a sentry box belay stance.
30m Follow the crack above the belay to a large ledge with a small chimney to the rear, enter the chimney and make an awkward move to top out. Large block on left for a sling belay. OR Go up to the right of the chimney (easier with a rucksack). Large block on right for a sling belay.