What makes it curious is not what it is, but what it might once have been. The arc runs roughly east-south-east to west-north-west, measuring around 55 metres in circumference, with a bank that rises about 0.6 metres on the interior and 1.6 metres on the exterior, and an internal fosse, a ditch dug alongside the bank, descending to roughly 0.8 metres. No surface trace survives to suggest this arc ever closed into a full circle, so whether it represents a fragment of a ringfort, some other form of enclosure, or always existed as a partial structure, remains an open question.

What gives the site an additional layer of interest is its persistence in cartographic memory. The arc appears on Ordnance Survey six-inch maps from 1842, 1905, and 1937, each time defined not by a dedicated field boundary but by the line of the townland boundary itself, suggesting the earthwork was already old enough, and prominent enough, to have shaped the administrative division of land around it. Ringforts, the circular enclosed settlements that dot the Irish countryside and date mostly from the early medieval period, were typically defined by exactly this kind of bank-and-fosse arrangement, built to demarcate farmsteads and protect livestock. Whether this particular arc ever formed part of such a structure, or represents something different entirely, the surviving evidence does not settle.