That kind of regularity is not accidental. It is the geometry of a rath, the Irish term for a ringfort, a class of enclosed settlement that was built and occupied predominantly during the early medieval period, roughly between the fifth and twelfth centuries. Thousands survive across Ireland in varying states, but many have been ploughed flat or absorbed into modern farmland. This one retains its bank and its ditch.

The enclosure is defined by an earthen and stone bank standing some 1.7 metres in internal height, with an external fosse, or ditch, dropping around 1.2 metres. That combination of raised bank and sunken ditch would have made for a meaningful boundary, less a fortification in the military sense than a defined domestic perimeter, marking off the farmstead of a family of some local standing from the surrounding landscape. Stone facing survives on the inner face of the bank to the south-east, which suggests a degree of construction care beyond simple heaped earth. A gap in the bank to the north and north-north-east may reflect later disturbance or a secondary opening, while the more likely original entrance appears to have been to the south. To the north-east, there are possible remains of a lime kiln, a structure used to burn limestone and produce quicklime for agricultural or building purposes, suggesting the site continued to see some use, or at least activity nearby, into more recent centuries.