It is roughly 200 metres long, rises to no more than about 0.6 metres at its highest point, and in places disappears under a thin skin of turf. One stretch appears to have been built from earth alone rather than stone. It is, by any conventional measure, an unremarkable thing, and yet its quiet persistence across a boggy upland slope makes it quietly arresting.

The boundary is what surveyors call relict, meaning it no longer functions as an active division of working land but survives as a physical trace of older agricultural organisation. It runs from a high point on the ridge down to the southeast, and as it descends it also traces the line between two townlands, Ballynamought to the west and Coomclogh to the east. The bulk of it is dry-stone walling, a technique requiring no mortar, where stones are carefully laid and balanced to hold by their own weight and interlocking mass. The western face is noticeably more squared than the eastern, suggesting deliberate construction rather than casual clearance piling. About 25 metres to its east sits a hut site, a separate but likely related feature pointing to a period of upland settlement or seasonal farming activity. Where the wall crosses a small gully of drier ground, it has been partially rebuilt at some point, evidence that someone, at some unknown time, considered it worth maintaining.