While walking between Lochan Cnapach and Lochan na Bearta in heavy rain several years ago, I found an old walled shelter beneath a very large boulder. It was probably near the col and could be in square NH 0079 which to date has no photo. I thought it was quite interesting so it might be something to locate and photograph. Lochan na Bearta has a good camping place on its SW shore in an area which is quite unvisited.