Start at the centre of the main slab and climb easily up and right to gain the bottom of cracks running parallel with the slab's right edge. Climb these cracks with increasing difficulty to where the crack meets the edge (crux). Continue up the edge until forced right into an awkward mantelshelf above a holly bush. Go back left onto the arete, from where excellent climbing leads to a crack which curves leftwards across the upper slab. Follow this to the top of Iron Horse.
* This newly updated climb is waiting to be checked by the crag moderator.