The field it once occupied still rolls gently southward, the grass still grows, and a GAA pitch sits nearby as a quiet modern landmark. But the circular earthwork itself, which would have defined the daily life of an early medieval farming family, has been completely levelled. Nothing breaks the surface.

A ringfort, or rath, was typically a circular enclosure defined by one or more earthen banks and ditches, used as a farmstead and settlement during the early medieval period, roughly between 500 and 1000 AD. Thousands were built across Ireland, and a significant number survive in varying states of preservation. This one at Ballykerwick does not. It appears on the Ordnance Survey six-inch map of 1842, recorded with the hachured markings that cartographers of that period used to indicate an earthwork, and measured at approximately thirty metres in diameter. It sat on a south-facing slope, a position typical of such enclosures, chosen for shelter and drainage. Somewhere between that survey and the present day, the rath was removed, most likely through agricultural clearance.