That much is certain. An enclosure, in the archaeological sense, typically means a defined area bounded by an earthen bank, a stone wall, or a ditch, and in the Irish landscape such features can date from the Bronze Age through to the early medieval period and beyond. They served as farmsteads, ritual sites, places of enclosure for livestock, or simply as boundaries marking one person's claim against another's. What this particular example looks like, how large it is, what shape it takes, and what period it belongs to are details that, for now, remain undisclosed.

Lisheenielagaun is a small townland in Mayo, a county whose boggy, Atlantic-facing terrain preserves an extraordinary density of earthworks and field systems, many of them still unexcavated and only partially understood. The name itself has the shape of an anglicised Irish place name, with the element "lisheenie" suggesting a diminutive of "lios", the Irish word for a ringfort or enclosure, which adds a certain quiet circularity to the fact that an enclosure has been recorded here. Whether the place name and the monument are connected is exactly the kind of question that makes this corner of the landscape worth paying attention to.