A spectacular scramble meandering around the West Face of Aonach Dubh. Ascend B Buttress beyond the Middle Ledge, making use of superb rocky ribs with a few exposed moments. Then traverse the Rake down into the Amphitheatre and cross No.4 gully (steep, loose, smooth slab--tricky when wet).
Find F Buttress, then ascend sharp aretes and slimy gullies to the top. The crux is a pinnacle which much be either abseiled or traversed on sloping edges (very insecure in the wet). The climbing on the arete is of good quality although there are many loose blocks. The gullies are an exercise in climbing lush vegetation!
Easier options exist alongside most of the crux sections, which reduce the overall grade to 2 if taken.