10m. Combine the the solid, clean rock of Flying Buttress Left Side with the lack of vegetation and birdlife and you have the best V Diff at Cummingston! With your back to Doubt Wall, start at the right hand end of the large ramp at the base of the main stack. Climb the left-facing corner of the buttress, enjoying great cam placements and a nice introduction to slopers. Once on top of the buttress, climb the steep wall (slotting another beautiful cam runner in on the way) to a choice of rocky belays.