These features, sometimes called march mounds or boundary mounds, were raised at the edges of territories, parishes, or landholdings to make visible a line that would otherwise exist only in memory or on paper. They are easy to overlook in a landscape full of lumps and rises, and that anonymity is part of what makes them quietly interesting. A mound that exists purely to say "here ends one thing and here begins another" carries a functional bluntness that more celebrated monuments lack.