The map label suggests the presence of a souterrain, an underground stone-lined passage or chamber typically built in early medieval Ireland as a place of storage, refuge, or concealment, usually associated with a nearby settlement or ringfort. That the OS cartographers felt the feature warranted a name at all implies something was either visible, or at least locally remembered, in the 1830s.

By the time the site was examined in more recent years, no surface trace remained. This kind of disappearance is not unusual for souterrains. They collapse inward over centuries, are deliberately infilled by landowners, or are simply swallowed by shifting agricultural ground. What survives is the place name on a nineteenth-century map, a single word in a landscape that has otherwise moved on. The 1838 OS survey, conducted with remarkable thoroughness across Ireland in the decades following the establishment of the Ordnance Survey of Ireland, frequently captured folk knowledge and local usage that would otherwise have gone unrecorded, which makes the notation all the more suggestive, even if the physical evidence has long since vanished.