This is a rath, the Irish term for a ringfort, the type of enclosed farmstead that was built across Ireland in enormous numbers during the early medieval period, roughly between the fifth and twelfth centuries. Thousands survive in varying condition; this one at Ballintubbrid is among the quieter, less conspicuous examples, its earthworks partially absorbed into the working rhythms of a modern farm.

The site takes the form of a roughly circular enclosure about thirty metres in diameter. The earthen bank that defines it stands nearly a metre high on the interior side and rises to around two metres on the outer face, a difference that reflects how the material was piled up from the digging of a fosse, or defensive ditch, which runs around the northwest to west of the structure. That fosse measures just under a metre deep and about two metres wide. A gap of roughly eighty centimetres in the western bank likely marks the original entrance, a modest opening that would once have controlled access to whatever domestic activity took place within. The level interior, which is now rough pasture heavily churned by cattle, was the living space of an early medieval farming household, a place of daily, ordinary life rather than military purpose. Field boundaries of later date have since been drawn across the site, one running east to west through the fosse, another cutting diagonally at the northeast, layering centuries of agricultural reorganisation over the earlier form. The site was recorded by Denis Power and the details uploaded in August 2011.

The rath sits on a slight west-facing slope, which means the bank reads most clearly when approached from the lower, western side, where the exterior height is most pronounced. The interior is partially covered by scrub and bushes, and the ground is soft and uneven underfoot, particularly after wet weather, so appropriate footwear is sensible. The surrounding pasture is actively farmed, and visitors should be mindful of livestock and land access conventions. There is no formal signage or visitor infrastructure, and the site is easy to pass without recognising it for what it is; looking for the consistent curve of the bank against the slope, rather than any dramatic feature, is the surest way to read the earthworks correctly.