20m. Start 5m left of the gully at the left end of the main Barrier Wall (left of the start of First Offence). Gain and climb the left-slanting crack, then twin cracks above, to pull onto sloping ledge. Move up and right and continue up the easy though unprotected slab, trending left at top to belay midway between two birch trees at top. Thread belay also available on boulder 25m further back.