That much is certain. What it consists of, how large it is, whether it is a ringfort enclosure, a field boundary of medieval origin, or something older and less easily categorised, remains officially undocumented in any publicly accessible form. It sits in the landscape, recorded by name and location but largely uncharacterised, which places it in a curious position: acknowledged, yet still waiting to be described.

Earthworks as a category cover a wide range of construction traditions. In an Irish context they might include the raised banks of a ringfort, a rath in which a farming family would have lived during the early medieval period, or the ditched enclosures associated with later land management. Clare has a high density of such features, many of them surviving because the land was never extensively ploughed. Smithstown itself is a townland name that typically suggests a later medieval or early modern settlement, though the earthwork could predate its surroundings by many centuries. Without further detail, the exact character of this particular feature remains open.