It is a rath, the Irish term for a ringfort, the kind of enclosed farmstead that was built in its thousands across Ireland during the early medieval period, roughly between the fifth and twelfth centuries. Most were the homesteads of farming families, their banks and ditches marking out a private world of house, livestock, and storage. This one at Kilballygorman has a diameter of forty-seven metres, placing it in the middle range of such sites.

The enclosure is defined partly by an earthen and stone bank and partly by a natural or cut scarp, the latter rising to about 1.1 metres on the interior side. Outside the bank runs a fosse, a defensive ditch, roughly 1.7 metres wide and nearly half a metre deep, which would once have made the boundary considerably more formidable than it appears today. The bank itself is modest, standing only 0.4 metres above the interior ground level and 0.6 metres on the exterior face, though centuries of erosion and agricultural pressure will have reduced what was originally a more substantial earthwork. Dead wood has accumulated against the outer face of the bank in the south-east quadrant, and the site has been fenced off with post and wire fencing, a common enough intervention on farmland where these monuments still function, however loosely, within a working landscape.

The interior tells a more immediate story of present use. A cattle-feeder is placed inside during winter, and the ground has been heavily poached by livestock, leaving the surface churned and uneven beneath the tangle of weeds. It is a reminder that many of Ireland's surviving ringforts occupy precisely the kind of sheltered, well-drained ground that farmers have always valued, meaning the ancient logic of the site and the practical requirements of modern agriculture have, for better or worse, continued to overlap.