The site sits on an east-west ridge with a clear outlook over Cork Harbour to the south, the kind of elevated position that early medieval farmers and landowners consistently favoured. Ringforts, known in Irish as raths when built from earth, were enclosed farmsteads typical of Ireland between roughly the fifth and twelfth centuries. A family would live and keep livestock within a circular bank and ditch, the enclosure providing both a degree of security and a visible marker of social standing in the landscape.

What survives at Parkgarriff is modest but legible once you know what you are looking at. The roughly circular area measures approximately thirty metres north to south and twenty-six metres east to west. The earthen bank that defines it stands only about forty-five centimetres above the interior ground level, though it rises to around one and a half metres on the exterior side, which gives a better sense of the original profile. Along the north-northwest to north arc, that bank has been incorporated directly into a field boundary, a fate common to hundreds of raths across Munster as tillage farming gradually reshaped the land. A trace of the fosse, the external ditch that would have reinforced the bank, survives to a depth of around seventy centimetres on the southern and western sides, suggesting those portions escaped the worst of the levelling.