Among those traces is a recorded enclosure, the sort of feature that appears with quiet frequency across the Irish landscape and yet rarely draws much attention. Enclosures of this kind can range from prehistoric ring-forts, known in Irish as ráth or lios, to early medieval farmsteads defined by earthen banks or stone walls, to ecclesiastical enclosures marking the boundaries of early Christian foundations. Without more specific detail it is difficult to say exactly what category this one falls into, but its presence in the archaeological record places it in a tradition of land-marking and boundary-making that stretches back well over a thousand years in this part of Connacht.

Errew itself is perhaps best known for the remains of Errew Abbey, an Augustinian foundation on a small peninsula jutting into Lough Conn, and the surrounding area has long been recognised as a place of early monastic and prehistoric activity. The proximity of water, the low drumlin topography, and the relative isolation of the peninsula made it attractive to both secular and religious communities across many centuries. Whether the enclosure is connected to that monastic tradition, to an earlier agricultural settlement, or to something else entirely, it represents one more piece of a landscape that has been shaped and reshaped by successive generations living close to the lakeshore.