Colmcille Climbers

Towards the back of the zawn at gr B 70576 23324 of Promethius etc, is an impressive narrow chasm, slabby on one side and overhung on the other.  Ab down a line of weakness (and drainage channel) on the landward end of the chasm, to an atmospheric narrow ledge well above the tide.   There are no belays, so belay on the abseil rope.  Climb the fine rock on the right of the wetness, and continue up on the left of a rib to an overhang, which is turned on the right.