17Lett, H.W., and W.J. Fennell. "The Great Wall of Ulidia; Commonly Known as "The Dane's Cast", or "Gleann Na Muice Duibhe" Ulster Journal of Archaeology 3.1 (1896): 23-29.
In a subsequent article in the next issue of the journal the author speculated on the naming of such ancient monuments: "They saw about them remarkable features, and had to account for them; they heard about the Danes as terrible warriors, and so attributed these wonders to them; hence 'Danes' Forts,' "'the Dane's Cast,' and similarly, 'Giants' Graves,' 'Big Stones,' &c.–all names given by a people who knew nothing of the real authors or origin of the things they named."