Ascends the appealing 8m-wide wall which is left of Watchtower Crack and at right angles to the main slabs. Pitches 2 and 3 are both good, but the start of pitch 4 detracts. If you want a tougher outing, and/or a line which stays entirely on this slim face, start up 'Pumping' and finish up 'Xenomorph' for pitches of 24, 20, 23 and 26.

Start: Start as for Watchtower Crack.

1. 33m (12) Take Watchtower Crack (or 'Pumping', or Flamingo) to large ledge.

2. 20m (20) L up orange face past FH. Join diagonal crack to small ledge, then follow ramp to pedestal. Step up L onto short delicate face, then L to good belay cave on arete.

3. 10m (23) Up flake then over the L end of the roof. Traverse R past FH to big undercling move, then some steep moves to another good belay ledge on arete.

4. 50m (18) Step up R onto higher ledge, then the reachy lichenous face 3-4m L of Watchtower Crack, adequately protected by small-med cams. Slab easily up L until forced around the arete onto the 'Arachnus' face for the last 20m.