The ringfort at Rathclare in north Cork occupies the top of a small hillock in pasture, and the juxtaposition of modern agricultural use and ancient earthwork is part of what makes it quietly worth attention. The farm building sits off-centre to the east of the interior, a detail that suggests the enclosure's circular geometry was accommodated rather than ignored when the structure was put up.

Ringforts, known in Irish as raths, were the most common form of rural settlement in early medieval Ireland, typically dating from around the fifth to the twelfth century. They were built as enclosed farmsteads, the earthen banks and ditches providing a degree of security for people and livestock rather than any serious military defence. The Rathclare example is modest in scale, roughly twenty-five metres in diameter, enclosed by a worn earthen bank that still survives to about 0.7 metres on the interior and slightly less on the exterior. Along the southern to north-north-west arc, an external fosse, a shallow ditch originally dug to provide the material for the bank, survives to around 0.6 metres in depth. Elsewhere around the circuit the bank survives only as a faint trace, worn down over centuries of agricultural activity. The place-name Rathclare itself carries the word rath, the Irish term for this type of earthwork enclosure, suggesting the fort was prominent enough in the landscape to anchor local naming long after its original function had faded.