These enclosures, known in Irish as ráth, were the farmsteads of early medieval Ireland, typically consisting of a raised circular area bounded by one or more earthen banks and ditches. They were not military fortifications in the conventional sense but domestic spaces, home to a family and their livestock, the bank offering protection against wolves and opportunistic cattle raiders rather than armies. Ireland has tens of thousands of them, and yet each one occupies a specific patch of ground with its own particular relationship to the surrounding fields, water sources, and routeways.

Boherhallagh itself is a small townland, and the rath there represents the kind of everyday early medieval settlement that once structured rural life across the country. The word townland, it is worth noting, is itself an ancient unit of land division, and many townland names preserve traces of the people or features associated with them long before any written record was made. The name Boherhallagh likely contains the Irish word bóthar, meaning road or lane, suggesting the area was defined in part by a route through it. The ringfort would have been a working farm, perhaps occupied from roughly the fifth to the twelfth century, part of a wider pattern of dispersed rural settlement that characterised Gaelic Ireland before the upheavals of the Anglo-Norman period.

Because detailed survey information for this particular site has not yet been made publicly available, specifics about its dimensions, condition, or current state of preservation remain difficult to confirm. What can be said is that Mayo contains a significant number of surviving ringforts, many of which are still clearly visible as earthworks in the modern landscape, sometimes incorporated into field boundaries or sitting at the edge of improved farmland. A careful look at large-scale maps of the Boherhallagh area may help locate the feature on the ground, and visiting in winter or early spring, when vegetation is low, generally makes earthworks easier to read.