(The). Stonehenge, which Geoffrey of Monmouth says was removed from Killaraus, a mountain in Ireland, by the magical skill of Merlin.
“If you [Aurelius] are desirous to honour the burying-place of these men [who routed Hengist] with an everlasting monument, send for the Giants' Dance, which is in Killaraus, a mountain in Ireland.” —Geoffrey of Monmouth: British History, book viii. chap. 10.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894