Coligarth, a district of Lady parish, Sanday island, Orkney. On a barren moor extending along its SW side are three large tumuli, and a number of smaller ones. A headland called Coliness or the Ness of Coligarth projects north-westward into Otterswick Bay, and has foundations of an ancient chapel, as well as a very large artificial mound, in which was found, in 1838, an ancient iron spear-head, 7 inches long.

(F.H. Groome, Ordnance Gazetteer of Scotland (1882-4); © 2004 Gazetteer for Scotland)