In reply to ozandrew:
I know Scottish Rock topo is way off the mark, too far left.
I think the SMC Ben Nevis guide is adequate.
First 60m scramble is probably mostly still covered up.
First slab rib side wall to the left is speckled white, I've seen 2 teams on separate occasions miss the slab and go underneath this side wall.
After that a long rightwards diagonal traverse gains the foot of the second slab rib which can be seen from below.
After that pitch trend diagonally left over more mossy rock towards the 40ft corner on NE buttress, top section open to variation.
I'll dig out a photo and make up a topo tonight.
Capt.