What makes it quietly notable is its absence from the 1837 edition of the Ordnance Survey six-inch map, one of the most thorough cartographic surveys Ireland had seen up to that point. Something the mapmakers either overlooked or did not consider worth recording has nonetheless survived in the landscape.

The enclosure is a modest thing by any measure: a slightly raised circular area roughly ten metres in diameter, ringed by a low bank of earth and stone about 2.2 metres wide. The bank stands no more than 0.8 metres above the surrounding ground on its north-eastern side, and rather less on the south. Enclosures of this general type, where a circular bank defines a small interior space, appear throughout Ireland and can date from prehistory through to the early medieval period, though without excavation it is rarely possible to say what purpose any individual example served, whether it sheltered livestock, marked a domestic settlement, or held some other function. Two gaps interrupt the bank here, one to the north at around 1.4 metres wide and a broader one to the west at four metres, which may represent original entrances or later breaks. The enclosure sits roughly 150 metres from Sligo Bay, close enough that the ground would have been subject to the particular conditions of coastal pasture, damp and salt-touched, which may partly explain why so little of the bank has survived above ground.