It survives only as a cropmark, a ghostly outline revealed when aerial photography picks up the way buried ditches and banks influence the growth of crops above them. The site is invisible at ground level, yet from the air it resolves into something quite specific: a double-ditched enclosure etched into the eastern edge of a broad ridge running roughly north to south.

A ringfort, or rath, was typically a circular or oval enclosure defined by one or more earthen banks and ditches, used as a farmstead or defended homestead during the early medieval period in Ireland, roughly the fifth to twelfth centuries. What makes this example at Clonsharragh particularly notable is that it is bivallate, meaning it was originally defined by two concentric rings of bank and ditch rather than the more common single circuit. The outer fosse, a fosse being the ditch component of the defensive arrangement, is noticeably slighter than the inner one, suggesting either differential survival or a deliberate difference in construction. The interior diameter runs to around fifty metres, with the full enclosure extending to approximately seventy-five metres across. More intriguing still is the presence of a large pit recorded at the centre of the enclosure. Its purpose is not recorded, and such central features in ringforts can represent anything from souterrains and storage pits to later disturbance, leaving this particular detail open to interpretation.