It is, in fact, a rath, the Irish term for a ringfort, the type of enclosed settlement that was built in enormous numbers across Ireland during the early medieval period, roughly between the fifth and twelfth centuries. What makes this particular example quietly interesting is how the modern landscape has grown around and into it, partially obscuring and partially preserving the original structure in the same breath.

The fort takes the form of a raised circular area roughly twenty-five metres in diameter, enclosed by a bank of earth and stone around four metres wide. Beyond that bank lies a flat-bottomed fosse, the type of defensive ditch designed to slow an intruder or at least make their approach conspicuous, and beyond that again a lower outer bank of earth and stone. The entrance, a gap of about two and a half metres wide in the inner bank, with a causeway across the fosse, is still visible on the eastern side. That causeway would once have aligned with a corresponding break in the outer bank, though that gap has since been filled in with field clearance material. The outer bank itself tells a layered story: sections of it have been built up over time with dumped field stones and earth, while other sections to the north-west have been absorbed entirely into a field boundary running on a different alignment, and portions to the north have disappeared altogether. The rath, in other words, has been quietly cannibalised by centuries of agricultural activity, yet enough of its original geometry survives to read the form clearly.