Enclosures of this kind are among the most common and least understood features of the Irish countryside. The term covers a broad range of structures, from the circular earthen ringforts that once served as defended farmsteads to later ecclesiastical or secular enclosures defined by banks, ditches, or stone walls. Without more specific detail for this particular site, Farna holds its shape quietly, noted on the map but not yet fully explained.

Kerry is unusually rich in such features, a county where early medieval settlement left its mark across upland and coastal ground alike. Ringforts, known in Irish as raths or cahers depending on whether they were built from earth or stone, were typically the enclosed homesteads of farming families between roughly the fifth and twelfth centuries. Many thousands survive across Ireland in varying states of preservation, some reduced to a faint circular crop mark, others still standing to impressive height. Where an enclosure is formally recorded but its details remain sparse, it often means the site has been identified through aerial photography, field survey, or cartographic sources, but has not yet been subject to close examination on the ground.