These structures, known variously as raths or ringforts, were the enclosed farmsteads of early medieval Ireland, typically dating from roughly the fifth to the twelfth centuries. A bank of earth or stone, sometimes doubled or tripled, defined a protected space for a family, their livestock, and their daily lives. Tens of thousands of them survive across Ireland in varying states of preservation, from near-perfect raised circles to faint cropmark traces visible only from the air.

The Carheens example is a rath, the earthen variety of ringfort as distinct from a cashel, which would be built of dry stone. Mayo, with its mix of drumlin country, bogland, and Atlantic-facing coastal terrain, contains a considerable number of such monuments, many of them poorly documented and relatively little visited. The specific details of this particular site, its dimensions, condition, the number of banks it retains, and any associated features such as a souterrain (an underground stone-lined passage, often used for storage or refuge), remain unrecorded in publicly available sources at present.