That omission alone makes this rath, a type of ringfort typically consisting of a circular or oval earthen bank enclosing a domestic settlement, quietly anomalous. It was simply never mapped, and so for the purposes of the official cartographic record, it did not exist.

The site in Bunacrower occupies the south-east corner of a pasture field on gently rolling ground. What survives is a slightly raised, D-shaped area measuring roughly 39 metres east to west and 29.5 metres north to south, though that southern measurement is cut short by a modern field wall running east to west, which now forms the straight edge of the D. That wall has effectively absorbed and obscured the southern arc of what was almost certainly an originally oval or circular enclosure; the ground beyond it has been levelled, erasing that portion of the bank entirely. What remains of the enclosing bank is clearest on the eastern arc, where a natural dip in the ground level gives the exterior slope a more pronounced appearance than it would otherwise have. Elsewhere, particularly to the north and west, the bank has been reduced to little more than a faint rise in the grass. A three-metre gap in the east may mark the original entrance. Two quarry pits lie close by, one to the west and one immediately to the north-east, both now partly softened by overgrowth and hawthorn. A fragment of stony bank running between the western pit and the field wall appears to be a later field boundary rather than anything connected to the rath itself. Another rath survives roughly 150 metres to the west-north-west, suggesting this was once a more densely settled corner of the landscape than its present quietness implies.