The term earthwork covers a broad range of human-made or human-modified ground features, from ancient ringforts and enclosures to boundary banks, burial mounds, and the remnants of field systems that predate any written record of the land they shaped. That ambiguity is part of what makes such a site quietly compelling: the shape of the ground carries history, but the precise nature of that history has not yet been set down in any publicly accessible form.

Killeens as a place-name has roots in the Irish word cillín, referring to a small burial ground, often one used historically for unbaptised infants or others excluded from consecrated churchyards. Whether the townland name reflects such a use nearby, or whether the earthwork itself has any connection to early Christian or pre-Christian activity in the area, remains unclear from what is currently available. Kerry is a county with an exceptionally dense archaeological landscape, from promontory forts along its Atlantic coastline to early monastic sites and Bronze Age remains scattered across its uplands, and earthworks of various periods and functions appear throughout.