The placename itself offers a quiet clue: "tobair" in Irish means a well, and names of this form often point to a holy well somewhere nearby, the kind of modest, local sacred site that accumulated devotion across centuries without ever attracting much formal attention. An enclosure in the archaeological sense typically refers to a defined area bounded by a bank, ditch, or wall, and such features in the Irish landscape can range from prehistoric ceremonial sites to early medieval farmsteads surrounded by a earthen or stone boundary known as a rath.

Tobernaveen sits in a county whose landscape is threaded with these kinds of low-profile monuments, many of them still unexcavated and incompletely understood. Mayo's terrain, with its bogs, drumlin fields, and Atlantic-facing hillsides, has preserved a remarkable number of ancient field boundaries, enclosures, and water-associated sites simply because the land was never intensively redeveloped. The combination of a well-name placename and a recorded enclosure in the same location raises the possibility of a site where domestic and ritual use may have overlapped, as was common in early medieval Ireland, when the boundary between the practical and the sacred was not always sharply drawn.