This is a rath, the Irish term for a ringfort, a type of enclosed farmstead built and occupied largely during the early medieval period, roughly between the fifth and twelfth centuries. Thousands of them survive across Ireland in varying states of preservation, and this example in Kilbarry townland is quietly representative of the form: a roughly circular raised area of around twenty-eight metres in diameter, its edges defined by a scarp on the northern, eastern, and southern sides, with a low bank and a shallow fosse, or ditch, to the west.

The dimensions recorded here tell a small story about how the enclosure was constructed and how it has weathered the centuries. On the western side, where the bank survives most clearly, the interior face stands only about a third of a metre above the interior ground level, while the exterior face rises to approximately two and a half metres, a difference that reflects both the original effort of construction and the gradual slumping and settling of earthworks over more than a thousand years. The interior slopes downward from its centre toward the north-east, suggesting either deliberate drainage engineering by its original inhabitants or subsequent subsidence. What once would have been a working agricultural enclosure, likely housing a family's home, livestock, and outbuildings within its banked perimeter, is now heavily overgrown, the vegetation obscuring whatever surface features might otherwise be visible.