Mullach Glas is a fine summit, likely to be tackled on a route which would also include Corcog and Binn Mhor. The summit area is rather flattish, but not too wide, allowing nice views as far as Mweelrea to the N and NE. The ascent from the col with Corcog is pretty steep while coming from Binn Mhor, there are only some 90m of more gentle climbing. There is a fence that runs along the cliffs' edge on that side. You may stick to the N side of the fence, using it as a handrail to follow the cliffs's edge, but care would probably be required at this point under wet conditions. Linkback: https://mountainviews.ie/summit/239/comment/18574/