At the northern extremity of the island, on the top of a hill, there is a circular heap of stones, called Carn-na-faire, or Watch Cairn, 53 feet diameter. It seems to have been a place of some strength, and intended, as the name implies, to give the alarm in case of an invasion, for it commands a very extensive view of the sea from S.W. by N. to S.E.
From volume 7 of the New Statistical Account of Scotland (1845).