The rest was lost to road construction at some point after people stopped living inside it, which is a quietly unsettling way for a settlement to end: not abandoned to time and weather alone, but physically cut in two. What survives on the eastern slopes of Corrin mountain, above the valley of the Finglas river, is enough to read the original shape, though it takes some patience to do so.

A rath, or univallate ringfort, is an enclosed farmstead of early medieval Ireland, typically consisting of a single earthen bank and external ditch surrounding a family's dwelling and perhaps some outbuildings. This one, with an internal diameter of around 24.6 metres, falls within the common size range for such sites. The surrounding bank rises between 0.3 and 1 metre above the interior, and the ditch, or fosse, is roughly 2.4 metres wide and 1.2 metres deep, though it appears to have been altered at some stage, possibly to improve drainage on a slope that already tilts noticeably downhill towards the east. Despite considerable disturbance over the centuries, two to three courses of drystone walling are still visible along the inner edge of the bank at the southwestern end, a small but legible trace of the original construction. More intriguing is a hollow in the northeastern sector of the interior, enclosed by a low bank and open to the south, which is interpreted as the remains of a hut roughly 5.8 metres across. No wall facing survives there, just the faint depression and its earthen rim, the ghost of a room. The site was documented by J. Cuppage in the 1986 Dingle Peninsula archaeological survey, which remains a foundational reference for the archaeology of Corca Dhuibhne.