Northeast of Gartan Lough on the N56, reached on minor roads, we come to the fishing center of Kilmacrenan, where Columba founded a monastery. Only the ruins of a 15th C. Franciscan abbey and an old parish church are to be seen today. 2mi/3km west is the Rock of Doon, a large slab of stone with a flattened upper surface which was the place of
coronation of the O'Donnell kings. It is well worth climbing the rock for the sake of the extensive views of the surrounding moorland from the top. At the foot of the rock is the Holy Well, visited by pilgrims for the sake of its healing powers.