The earthen bank that once enclosed the interior has been stripped away along its southern arc, from the south-south-east round to the south-west, but enough survives to make the geometry legible. What remains is a raised circular platform roughly 27.5 metres across internally, ringed by a wide, deep fosse, the term for the ditch that typically runs outside the bank in such enclosures and would have served both as a practical barrier and a marker of the boundary between the domestic space inside and the world beyond.

Raths, or ringforts, were the most common form of rural settlement in early medieval Ireland, built and occupied roughly between the fifth and twelfth centuries. They functioned primarily as farmsteads, the bank and fosse protecting a family's livestock and dwelling from opportunistic raiding rather than from organised military assault. Most were the homes of farmers of some local standing, and the effort required to raise a bank of this scale, substantial enough to survive centuries of agricultural pressure, suggests the people who built it had the labour and resources to invest in a permanent enclosure. The break in the bank at the south-east, with a causeway crossing the fosse at that point, marks what would have been the original entrance, a detail that gives the whole structure a directional logic even now.