The demesne itself, like many of its kind in the Irish midlands and west, would have been shaped and planted over centuries, with earlier features in the landscape sometimes absorbed, buried, or simply left alone at the margins of a designed estate. An earthwork in this context could be almost anything: a relict field boundary, a platform associated with earlier habitation, a ceremonial enclosure, or something more utilitarian. The fact that it has been recorded as a distinct monument suggests it retains enough physical presence to be distinguished from the general contours of the land.

Towerhill Demesne takes its name from the kind of improving landlord landscape that became common across Connacht during the eighteenth and nineteenth centuries, when estates were laid out with avenues, ornamental planting, and walled gardens, often overlaying much older patterns of land use. Earthworks of this kind, if they predate the demesne, may represent occupation or activity stretching back through the medieval period or earlier. Without more detailed survey information in the public record, it is not possible to say with confidence what this particular feature represents, which is itself a small reminder of how much of the Irish archaeological landscape remains catalogued but not yet fully examined.