A rath, or ringfort, is a circular enclosure defined by one or more earthen banks and ditches, built during the early medieval period, roughly between the fifth and twelfth centuries, and used as a defended farmstead by a single family or small community. Ireland has tens of thousands of them, yet each one occupies its own particular patch of ground, shaped by local soil, local stone, and local history. The one at Garrane is among the quieter members of that company.

Ringforts of this kind were the dominant form of rural settlement in early medieval Ireland. The bank, thrown up from the spoil of the surrounding ditch, would have enclosed a timber or wattle dwelling, perhaps a small outbuilding or two, and offered a degree of protection for livestock as much as for people. Kerry is unusually dense with such monuments, a reflection both of the county's long pastoral tradition and of the relative survival of earthworks in areas that escaped intensive later cultivation. The specific history of this particular enclosure at Garrane, its dimensions, its condition, any finds or features associated with it, remains to be fully documented in the public record.