The element "rath" refers to a ringfort, one of the most common monument types in the Irish landscape, and the fact that it survives as a place name is often the first clue that an earthwork of some kind lies nearby, even when the ground itself has been altered beyond easy recognition. Ireland has tens of thousands of these circular enclosures, built predominantly during the early medieval period, roughly between the fifth and twelfth centuries, and used as enclosed farmsteads by families of varying social rank. A bank of earth, sometimes accompanied by a fosse or outer ditch, defined the boundary of the domestic space within.

Ringforts of this kind were not defensive in any serious military sense. The enclosure marked status, kept livestock from straying, and separated the household from the surrounding land. Over centuries, many were levelled by ploughing or absorbed into field systems, while others survived as low earthen rings, sometimes tree-covered, sometimes mistaken for natural rises in the ground. The presence of a rath element in the townland name at Ratheskin suggests the monument was significant enough, or visible enough for long enough, to anchor the local place name and persist through centuries of use and change.

Beyond what the name itself implies, detailed records for this particular site have not yet been made publicly available, which means its current condition, dimensions, and precise form remain undocumented in accessible sources. What is certain is that it belongs to a class of monument woven quietly into the Mayo countryside, and that the townland carrying its name has preserved, at minimum, the memory of what once stood there.