The site measures roughly 25 metres across internally, with an outer diameter of about 31.5 metres, and it is defined by a bank of earth and stone accompanied by an external fosse, the term for the ditch that typically runs outside such an enclosure. That combination of bank and fosse is the defining signature of a ringfort, the most common type of early medieval settlement monument in Ireland, built and occupied roughly between the fifth and twelfth centuries. What makes this one quietly compelling is the north side, where the builders appear to have simply let the marsh do the work of defence that the fosse handles everywhere else.

Ringforts in Ireland number in the tens of thousands, but each one carries its own small decisions. Here, a gap of about 1.8 metres in the south-west of the bank may be the original entrance, narrow enough to suggest that access was controlled rather than open. Inside, nothing is visible above ground today, though that absence tells us little. The interiors of ringforts typically held timber or wattle structures, animal pens, and sometimes souterrains, underground stone-lined passages used for storage or refuge, none of which leave obvious surface traces once the organic materials have rotted and the ground has settled. The marshy ground to the north would have provided a natural deterrent to approach while also offering water and perhaps seasonal grazing, a practical pairing that whoever chose this spot clearly recognised.