Three metres west of this rectangular enclosure in Ballymacadam, a modern field division makes a deliberate detour around the monument, as if generations of farmers understood, even without knowing quite why, that this particular lump of ground deserved to be left alone.

The enclosure itself is a substantial thing, measuring roughly 35.5 metres north to south and 45.2 metres east to west, defined by an earthen bank into which a considerable amount of stone is mixed or has worked its way to the surface over time. At its crest the bank is around 2.2 metres wide, spreading to a base of 5.5 metres, and though it stands less than a metre high on the interior face, it would once have presented a more imposing profile. Enclosures of this kind, broad earthen banks forming a defined perimeter around a roughly level interior, appear across Ireland in various periods and contexts, from early medieval farmsteads to enclosures associated with ritual or stock management, though without excavation it is rarely possible to say which category applies. The site sits on a south-west-facing slope in gently rolling pastureland, and the monument itself follows that natural decline. A pond lies in the field immediately to the south-west. The north side of the bank has been noticeably cut back along its outer face, and the south side is considerably worn down, with scrub growing up along what remains. There is no clearly defined entrance, though a gap roughly 1.7 metres wide on the east side, where the bank tapers down on either approach, suggests that is where people once passed in and out. The interior is uneven, rising slightly toward the centre on the north side, which may reflect the survival of earlier features beneath the turf, or simply the long accumulation of time.