In reply to Tricadam:
The trouble is getting a picture (s). The crag is too big for one photo, and needs at least two. I have one of the right end which has been made into a topo which is in SMC Journal 2008 - can you get hold of that? But the left end is not so easy. It needs someone to go out on to Sron na Lairig on a nice day, preferably with good conditions (and therefore waste a climbing day) with a good camera.
Actually I'm about to try and go there today. But we may not get there with the current weather.