Roughly 7.6 metres across, it is defined by a gravelly earthen bank, with two opposing gaps on the north-west and south-west sides that may well be original entrances. Just south of centre, there is a faint mound. Nobody is entirely sure what any of it means.

The uncertainty is the most interesting thing about this monument. Its siting on a prominent natural rise and its dimensions are consistent with a barrow, the term used for a prehistoric funerary mound, often covering a burial or acting as a territorial marker in the landscape. Small ring barrows of roughly this scale are not uncommon across Ireland, and their builders typically favoured elevated ground, even modestly elevated ground, for reasons that seem to have been as much about visibility as anything else. But the Bracklagh enclosure could equally be the degraded remains of a house, perhaps a small circular dwelling of the kind that was built across Ireland from the prehistoric period well into the early medieval era. The faint central mound complicates matters further: it might be the ghost of a burial deposit, or simply the collapsed remains of a hearth and floor. Without excavation, the earthwork holds its secrets.