Donald Shiach: There is a new-ish bridge in the Callop Glen at about NM921773. This gets you over Allt na Cruaich, which is impressive in anything but drought conditions. It leads to a mucky Land Rover track through the forestry and up into the corrie between the Grahams. Be very careful which burn you follow after completing the circuit over Glas Bheinn. The burn north of Allt Tarsuinn is a very bad route indeed, as a glance at the map will show. However, the ground is a hundred times worse than you might imagine.
