The mound is known as Cronk ny Arrey Lhaa, or 'hill of the daytime watch', for which purpose it could have served well. A document dated 1627 and contained within the Castle Rushen Papers, however, states that the day and nightime coastal watches were by then kept from Knockmore (now Cronk Mooar) 1200m to the south-west. It is not impossible that the site may have served this purpose during medieval times before being superseded by Cronk Moar.