These structures are found across Ireland in their hundreds, often lurking beneath farmland or the footprints of ringforts, their entrances long since collapsed or deliberately concealed. The one at Lugaphuill is recorded as a monument, which means at some point it was identified, noted, and placed on the map. Beyond that, the documentary record for this particular site is currently sparse.

Souterrains were built predominantly between the early and late medieval periods, roughly the seventh to the twelfth centuries, and their exact purposes have long been debated. The most plausible interpretations point to cool storage for dairy produce, or as places of retreat during raids. In Mayo, a county with a dense archaeological landscape shaped by centuries of farming, Viking-age disruption, and Gaelic lordship, such underground features are not uncommon, though each site carries its own local particularity, tied to the settlement pattern of the townland around it. Lugaphuill, as a townland name, has the character of a landscape descriptor in Irish, though without additional documentation it would be unwise to press that too far.