One other remarkable form of barrow occasionally, though very rarely, found in Scotland, in all probability owes its origin to the Vikings who invaded and colonized our coasts at the close of the Pagan period. This consists of an oblong mound of larger size than the primitive long barrow, and terminating in a point at both ends. Some examples are also inclosed with stones, having one of considerable size at each end; and from their rarity and their remarkable resemblance to the _Skibssœtninger_, or ship barrow of Sweden, there can be little hesitation in assigning to them a Scandinavian origin. One of these encircled ship barrows was only demolished a few years since, on the farm of Graitney Mains, Dumfriesshire, but no record of its contents has been preserved. A much more celebrated one, and, according to venerable traditions, of undoubted native origin, is the Mound of St. Columba, at _Port a Churaich_, or the Bay of the Boat, which is believed to mark the spot where the Saint first landed on Iona. It measures about fifty feet in length, and is supposed to be a model of St. Columba's _currach_, or boat made of wicker and hides, built by him in commemoration of his landing on the sacred isle. An upright stone formerly stood at each end, and near to it is a smaller mound, representing, as is said, the little boat towed astern. In all probability an investigation of the contents of this traditional memorial would prove its sepulchral character, as has been found to be the case in other Scottish ship barrows.[62] These singular tumuli are described by Chalmers as "oblong ridges, like the hulk of a ship, with its bottom upwards." But it appears from the investigations of northern antiquaries, that this sepulchral monument was not only the mimic representation of the Vikings' ship, but that the contents of the Scandinavian _Skibssœtninger_ seem to confirm the assertion of their sagas, that these warriors of the deep were sometimes literally burnt in their ships, and the form of the favourite scene of their triumphs renewed in the earth-work that covered their ashes.[63]