Bargrennan chambered cairns are a class of prehistoric chambered cairns found only in south-west Scotland, in western Dumfries and Galloway and southern Ayrshire. They form a separate group from the Clyde cairns which are found along the coast of western Britain. Unlike Clyde cairns, Bargrennan monuments are passage graves, with one or more chambers set into a round cairn. As well as being structurally different, Bargrennan cairns are separated from Clyde cairns by their siting and distribution; they are found in upland, inland areas of Galloway and Ayrshire. Murray suggests that there are around twelve Bargrennan monuments in south-west Scotland. She also notes that as sheep rees are often built into and over these types of cairns, more are likely to have been lost under shepherd's buildi