It is easy to walk past without registering what it is, but the circular outline, roughly 35 metres across, marks the footprint of a rath, the commonest type of early medieval enclosure in Ireland. A rath typically consisted of one or more earthen banks and ditches thrown up around a farmstead, less a military fortification than a statement of land ownership and a means of protecting livestock. This one's bank, still measurable at around eight and a half metres wide, stands only half a metre above the interior on the inside, just under a metre on the exterior, worn down by centuries of weather and grazing.

The site's paper trail is modest but telling. In the 1940s, a record noted a 'circular fort' on land belonging to a Mr Sugrue at Lahard, described as having one bank and a diameter of one hundred feet, which corresponds closely to what survives today. That description, preserved through the Irish Topographical Archive, offers a thread connecting mid-twentieth-century observation to a structure whose origins almost certainly lie in the early medieval period, perhaps the first millennium. An overgrown field boundary running east to west now cuts across the interior north of centre, the kind of later agricultural intrusion that gradually obscures and complicates older landscapes. Whatever coherence the enclosure once had, its geometry is still legible from the right angle, particularly along the better-preserved northern and eastern arc where the bank retains its definition.