Across the pasture of Aghaneenagh, on a south-facing slope in north Cork, a slightly raised linear strip, about two metres wide and forty-three and a half metres long, extends from the centre of the enclosure outward through the entrance and continues into the adjoining field. It looks, to the trained eye, like a levelled field boundary, the kind of low ridge that accumulates over centuries of dividing land. Whether it is older than the fort, contemporary with it, or simply a coincidence of later farming practice is not recorded. It sits there, ambiguous and unresolved.

The fort itself, known as a rath, a type of enclosed settlement built during the early medieval period, typically between the fifth and twelfth centuries, was still visible enough in 1842 to be recorded on the Ordnance Survey six-inch map as a hachured roughly circular enclosure approximately thirty metres in diameter. By the time fieldwork caught up with it in more recent decades, the structure had been largely levelled by agricultural activity, though the ground still retains the memory of its shape. The circular area measures about thirty-two and a half metres across in both directions. What remains of the bank on the north-western to north-eastern arc still stands internally to a height of 1.65 metres, with an external fosse, a defensive ditch, running alongside it. The opposing arc, from north-east back around to north-west, is far more worn, its bank barely half a metre high externally and its fosse reduced to a shallow scrape just twenty centimetres deep. The southern side carries a causewayed entrance 7.6 metres wide, a gap left deliberately in the bank to allow passage, and it is from here that the puzzling linear feature heads outward. The northern boundary of the rath was at some point incorporated into the townland boundary, a detail that speaks to how these ancient enclosures quietly became fixtures of later land organisation long after their original inhabitants were forgotten.