It is not. The subrectangular raised area, measuring roughly twelve metres on its longer axis and eight and a half on its shorter, is the remains of a small enclosure defined by an earthen bank, the kind of enclosure that appears throughout Ireland in various forms and periods, used historically for purposes ranging from settlement and livestock management to ritual activity. What makes this particular example quietly notable is the way its bank behaves: on the south-east side, the face that looks towards the river, the outer wall of the bank climbs to 1.2 metres, considerably higher than anywhere else along its circuit, as though it was deliberately built up to present a more pronounced face to the water.

A stone-faced scarp extends roughly ten metres to the north-east from the enclosure's north-east end, and the 1842 Ordnance Survey six-inch map, one of the earliest systematic cartographic surveys of Irish townlands, shows this feature continuing as a field boundary running parallel to the river for around a hundred metres before meeting a perpendicular field system. That the enclosure was already being absorbed into an agricultural landscape by the mid-nineteenth century tells us something about how ancient features tend to survive in Ireland: not through deliberate preservation but through gradual incorporation, their original purpose forgotten while their physical form goes on serving some newer, more mundane function. By the time the site was recorded, cattle grazing had worn down much of the bank, and furze had begun to reclaim the rest.