3Other names for the Black Pigs' Dyke include: The Black Pigs Race, The Worm Ditch, The Worm's Cast, Duncla, and the Dane's Cast. ("Black Pigs Dyke – Regional Project." Roscommon County Council. Web. 02 June 2014. <http://goo.gl/DMhFj6>.) Some authors consider The Dorsey in Co. Armagh and The Dane’s Cast in Co. Down to be part of The Black Pig's Dyke.