This is a rath, the Irish term for a ringfort, the kind of enclosed farmstead that would have housed a family of some local standing during the early medieval period, roughly between the fifth and twelfth centuries. Thousands survive across Ireland in varying states of preservation, but this one in Clogh has retreated almost entirely back into the ground.

The site is modest by any measure. The circular enclosure is approximately thirty metres in diameter, defined by a bank of earth and stone that measures around 3.5 metres wide but rises only 0.4 metres above the surrounding ground. Outside that, there is a fosse, a shallow external ditch, which is less than two metres wide and barely ten to fifteen centimetres deep in places. The bank, for most of its circuit, hardly stands proud of the interior at all. A report from 1976 recorded the presence of an outer bank and identified the original entrance on the south-eastern side, the preferred orientation for ringfort entrances, which typically faced the morning sun. By the time more recent observations were made, neither the outer bank nor any trace of that entrance could be identified on the ground. Dense vegetation has since colonised the whole structure, softening and obscuring what little definition remained.