That simple designation covers a broad category of human-made landscape features, anything from prehistoric enclosures and ringforts to mediaeval field boundaries and burial mounds, and for now the earthwork at Rinn keeps its particular identity close. It is a recorded monument, meaning it has been examined and catalogued at some point, but the details of what survives on the ground, what form it takes, and what period it belongs to, have not yet been made publicly available. In a county where the landscape is already layered with megalithic tombs, passage graves, and ancient field systems preserved beneath bogland, one more earthwork quietly waiting to be described is neither surprising nor unremarkable.