A field fence running on a north-north-west to south-south-east axis bisects the site, and everything to the east of that line has been levelled, leaving only faint undulations in the ground. What remains to the west is a raised semi-circular platform, roughly 25 metres north to south and 15 metres east to west, defined by a scarp approximately one metre high along its curving edge. A modern roadway now runs along the outer foot of that scarp, pressing close to what little earthwork is left.

A rath, the Irish term for a ringfort, was typically a circular or oval enclosure defined by an earthen bank and ditch, used as a defended farmstead during the early medieval period, roughly between the fifth and twelfth centuries. Thousands were built across Ireland, and many survive in varying states of preservation. This one in Carrowcardin was already being mapped in 1837, when the first Ordnance Survey six-inch sheets recorded it as a roughly oval enclosure. By the time the 1913 edition was produced, the cartographers rendered it as a hachured D-shape, the change in outline suggesting that the eastern portion had already been reduced or absorbed into the surrounding field system by that point. The progression from oval to D-shape, documented across two generations of mapping, quietly traces the process of agricultural encroachment that would eventually leave only ephemeral traces on one side of a fence.