These enclosures, known in Irish as ráth when constructed from earthen banks and ditches, were the standard farmstead type of early medieval Ireland, in use roughly between the fifth and twelfth centuries. Tens of thousands of them once existed across the country; several thousand remain in some form today, scattered through fields, overgrown on hillsides, or reduced to faint cropmarks visible only from the air.

The townland name Ballykinlettragh itself carries the compressed geography of an older Irish place-name system, where baile, meaning a settlement or townland, combines with further elements that often describe a local feature of land, water, or ownership. Mayo, with its Atlantic coastline, its drumlin country, and its broad boglands, retains a dense concentration of early medieval settlement remains, many of them still unexcavated and understood only from their surface form. A ringfort of this kind would typically have enclosed a single family's dwelling, outbuildings, and perhaps small enclosures for livestock, all protected by one or more concentric banks. The interior might once have held timber or wattle structures, a souterrain (an underground stone-lined passage used for storage or refuge), and everyday evidence of farming, craft, and domestic life.

The source material for this particular site is currently sparse, and specific details about its dimensions, condition, or any recorded finds remain unavailable. What can be said is that its presence in the townland is itself a form of evidence, a marker of continuous human occupation in this part of Mayo across more than a millennium.