The rath at Lisgriffin in north County Cork is one of thousands of such enclosures scattered across Ireland, the remains of a farmstead most likely built and occupied during the early medieval period, roughly between the fifth and twelfth centuries. A rath is essentially a ringfort formed from earth rather than stone, its raised bank and outer ditch serving both as a boundary marker and a modest defensive perimeter around a family's dwelling and livestock.

This particular example sits on a gently east-facing slope, positioned just above a sharper drop in the ground to the east and south, a placement that would have offered both drainage and a measure of natural advantage in the landscape. The enclosed area measures roughly 28.5 metres north to south and 28.2 metres east to west, making it a fairly modest but complete example of the type. The earthen bank survives to a height of around 0.85 metres on the interior face and 0.9 metres on the exterior, with an outer fosse, or ditch, that once deepened the overall effect of the boundary. That fosse has largely silted up on the eastern side over the centuries. A narrow break of about one metre in the bank to the west-southwest is likely the original entrance, the gap through which people and animals would have passed daily. The north-western section of the bank has been absorbed into the modern field fence system, a small reminder of how agricultural landscapes tend to cannibalise older ones. Deciduous trees now grow along the bank and across the interior, giving the enclosure a slightly overgrown, self-contained character that marks it out from the surrounding pasture.