30m. The zawn bed is only reachable at very low tides. At any other time the route will be reached by reversing Arch Zawn Traverse at a poorly protected HVS 4c.
Climbs the corner for 6m before wandering right to easier ground. Thread belays at halfway ledges then detour up right to avoid the loose pillar before traversing left and diving into a dirty hole to emerge on the summit. Type two fun!