The term earthwork covers a broad category of man-made features, from ancient enclosures and field boundaries to burial mounds and defensive banks, and without further detail it is difficult to say precisely what form this one takes or what purpose it once served. That ambiguity is itself a kind of record: Clare is dense with such features, many of them unexcavated and only partially understood, their origins stretching back through the early medieval period and further still.

Ballykildea is a small rural townland, and the earthwork there is a protected monument, meaning it has been formally identified and recorded as part of the archaeological heritage of the state. Beyond that, the available public record is thin. No excavation results, no historical documentation, and no detailed description have made it into circulation. It remains, for now, one of those quiet features that appear on maps and in monument lists but resist easy categorisation.