But the earthwork at Ballyvoddy in north Cork is a rath, a type of ringfort that served as a farmstead enclosure during the early medieval period in Ireland, typically dating from roughly the fifth to the twelfth century. These were the basic unit of rural life for generations of Irish farming families, and several tens of thousands of them survive across the island in varying states of preservation.

This particular example is modest but measurably intact. The roughly circular enclosure measures 32 metres east to west and 31 metres north to south, enclosed by an earthen bank that stands around 0.6 metres on the interior and 0.65 metres on the exterior face. Outside the bank runs a shallow fosse, the technical term for a defensive or boundary ditch, here surviving to a depth of about 0.25 metres. There is a break in the bank on the south-southeast side, most likely the original entrance. The interior is grass-covered and slopes gently southward. What gives the site an added layer of interest is its proximity to the Claidh Dubh, a substantial early medieval linear earthwork that runs through north Cork and into Kerry. That monument lies approximately 300 metres to the southwest, raising the possibility that this small farmstead existed in some relationship, spatial or otherwise, to that much larger boundary feature.