The hill in the right distance is Creag an Airgid, the silver crag, below the slopes of which a great battle is described as being fought in 1519 between the MacIains, the lairds of Ardnamurchan, and the MacDonalds. For some time we have been searching for evidence of this battle - see earlier posts here, here and here - in particular for signs of the two cairns raised after it, a smaller one over the MacIain chief and his two sons, and a larger over the bulk of the MacIain fighters. Our previous searches produced little joy.
Several possibilities come to mind. One is that the battle took place close by the cairn. The MacIains could have chosen the spot as their right flank would have been protected by the steep slope of Druim Liath, and their left by the deep ravine of the Allt Uamha na Muice burn. Another is that this could have been where the MacDonalds buried their fallen. And a third, of course, that this cairn has nothing to do with the battle.
There's an interactive map of the area here.