Enclosures of this kind are among the most common yet least understood features of the Irish countryside, ranging from early medieval ringforts, which served as defended farmsteads, to prehistoric field boundaries and ceremonial spaces. The fact that this one has been recorded at all places it within a long tradition of human activity in this part of Connacht, a region whose boglands and hillsides have quietly preserved traces of settlement stretching back thousands of years.

Beyond the name of the townland and the bare fact of the monument's existence, the detailed history of this particular enclosure remains undocumented in any publicly available form. Mayo's archaeology is often overshadowed by more celebrated sites elsewhere in the west of Ireland, yet the county contains an extraordinary density of field monuments, many of them on marginal land that was never intensively farmed in the modern era and so escaped the clearance that erased so many comparable sites elsewhere. Knockagarraun itself, whose name in Irish suggests a meaning connected to a rough or rocky ridge, is the kind of quiet rural townland where such survivals are entirely plausible, even expected.