Heel Stone, and the Sun has often been photographed over it. A folk tale relates the origin of the Friar's Heel reference. The Devil bought the stones from a woman in Ireland, wrapped them up, and brought them to Salisbury plain. One of the stones fell into the Avon, the rest were carried to the plain. The Devil then cried out, "No-one will ever find out how these stones came here!" A friar replied, "That’s what you think!", whereupon the Devil threw one of the stones at him and struck him on the heel. The stone stuck in the ground and is still there. Brewer's Dictionary of Phrase and Fable attributes this tale to Geoffrey of Monmouth, but though book eight of Geoffrey's Historia Regum Britanniae does describe how Stonehenge was built, the two stories are entirely different. The name is not unique; there was a monolith with the same name recorded in the nineteenth century by antiquarian Charles Warne at Long Bredy in Dorset. Arthurian legend The twelfth-century Historia Regum Britanniae ("History of the Kings of Britain"), by Geoffrey of Monmouth, includes a fanciful story of how Stonehenge was brought from Ireland with the help of the wizard Merlin. Geoffrey's story spread widely, with variations of it appearing in adaptations of his work, such as Wace's Norman French Roman de Brut, Layamon's Middle English Brut, and the Welsh Brut y Brenhinedd. According to the tale, the stones of Stonehenge were healing stones, which giants had brought from Africa to Ireland. They had been raised on Mount Killaraus to form a stone circle, known as the Giant's Ring or Giant's Round. The fifth-century king Aurelius Ambrosius wished to build a great memorial to the British Celtic nobles slain by the Saxons at Salisbury. Merlin advised him to use the Giant's Ring. The king sent Merlin and Uther Pendragon (King Arthur's father) with 15,000 men to bring it from Ireland. They defeated an Irish army led by Gillomanius, but were unable to move the huge stones. With Merlin's help, they transported the stones to Britain and re-erected them as they had stood. Mount Killaraus may refer to the Hill of Uisneach. Although the tale is fiction, archaeologist Mike Parker Pearson suggests it may hold a "grain of truth", as evidence suggests the Stonehenge bluestones were brought from the Waun Mawn stone circle on the Irish Sea coast of Wales. Another legend