7Otway, Caesar. Sketches in Erris and Tyrawly, Illustrative of the Scenery, Antiquities, Architectural Remains, and the Manners and Superstitions of the Irish Peasantry. Dublin: T. Connolly, 1850. 38.
Otway continues, comparing the ancient Irish builders of the megalithic monuments with the prehistoric Native Americans: "They were unaccountably exterminated by a far inferior people, just as the existing races of American red men have destroyed the more intelligent people that flourished before them, and who have left incontestable traces of their existence in the remains of their arms and their buildings, as now found along the Ohio, and in other central parts of the North American continent. In the same way the Tuatha Danaan have here left the cromleachs, the giants' graves, the stone circles, the doons and cassiols, the Cyclopean walls, and the crypts and covered caves, that are to be found under our moats, and raths, and cairns."