A ring barrow is a burial monument consisting of a central mound enclosed by a surrounding ditch, or fosse, and an outer bank, the whole arrangement functioning as a kind of layered earthen circle. This one follows that pattern precisely: a central mound roughly six metres across and sixty-five centimetres high, ringed by a U-shaped fosse nearly two metres wide, with an outer bank completing the composition. The overall diameter runs to just over fourteen and a half metres. The drumlin beneath it, one of those smooth, elongated hills shaped by glacial drift, gives the monument a slight elevation above the surrounding landscape, which is perhaps exactly why it was chosen.

The site was recorded by Timoney in 1984 and forms part of a wider cluster documented by Burenhult in 1980. Burenhult grouped it within what he called Structure 13, then listed under the name Knocknahur North but subsequently corrected to Ballybeg, a collection of five related structures in the area. One detail from Burenhult's analysis is particularly striking: all five structures in this group returned very low phosphate values. Phosphate testing is used by archaeologists to detect traces of organic material, particularly bone and decomposed matter, that accumulates where burials or sustained human activity have taken place. Low readings in a funerary context raise quiet questions about how these monuments were actually used, whether burials occurred here at all, or whether the remains, if any, have long since dissolved entirely in the acidic soil conditions that prevail across much of the west of Ireland.