That is not a metaphor for neglect so much as a literal description: along the eastern and south-western arc of the enclosure, the only legible trace of the original earthwork is a cropmark, a concentration of the weeds that tend to colonise disturbed or nutrient-altered ground above buried features. It is one of the quieter ways that an ancient boundary announces itself.

Ringforts, known variously as raths or lios, were the most common form of rural settlement in early medieval Ireland, typically enclosing a family farmstead within a circular bank and ditch. The example at Kiltybo sits on a low natural rise, looking out over rolling pasture to the north-east, though the views to the south and west are now closed off by farm buildings and trees. The enclosure is roughly circular, somewhere between 27 and 30 metres in diameter, and its western to north-north-eastern arc is still defined by a dilapidated stony rise or scarp. The structure was recorded on Ordnance Survey maps of both 1838 and 1916, which means it was visible and recognisable as a feature for at least the better part of two centuries, even as the farmyard pressed closer. Today a post and wire fence cuts across the eastern third of the interior, sycamore and beech have taken hold around the perimeter, and wet boggy ground lies to the south-west. A railway line runs just a few metres to the south, close enough that any passing train would once have had a clear view of the earthwork from the carriage window.