Visible in aerial imagery as a circular enclosure roughly twenty metres in diameter, it is defined by a fosse, essentially a surrounding ditch, somewhere between two and three metres wide. At ground level, in low-lying pasture that still floods on occasion, the feature would be easy to miss entirely.

The enclosure sits close to the former western shore of Lough Croan, a turlough, which is a type of seasonal lake common in the Irish midlands and west that fills and empties through subterranean limestone drainage rather than surface streams. The fluctuating waterline of such a landscape makes it a peculiar setting for an enclosure of this kind, and the ground remains liable to flooding today. Roughly a hundred and ten metres to the south-east lies a crannog, an artificial or partially artificial island dwelling of the sort built in Irish lakes and wetlands from the Bronze Age through to the early modern period. The proximity of the two features, each making use of the water-edged terrain in its own way, is quietly suggestive, though the relationship between them is not documented. The enclosure was reported by Jean-Charles Caillere and has not, on the available evidence, been subject to excavation or detailed ground survey.