The earthwork at Caherlustraun is irregular in shape, roughly 52 metres across at its longest axis, and defined by a bank of earth and stone that has weathered and slumped over time. A later field wall cuts across the northern arc of the monument, following its own logic and paying little attention to whatever came before it. The result is a landscape feature that has been interrupted, overlaid, and partly erased, leaving something that rewards careful looking rather than a quick glance.

The enclosure itself belongs to a class of monuments common across Ireland, where a raised bank, sometimes accompanied by a ditch, enclosed a domestic or agricultural space. What makes this particular example quietly striking is what local tradition holds about the ground within it. Among the interior mounds and hollows, the outlines of what appear to be two rectangular structures are visible, and oral memory associates this spot with a cluster of houses that stood here before the Famine. That catastrophe, which devastated Irish rural communities through the late 1840s, left behind exactly this kind of trace: a settlement that emptied, its walls gradually sinking back into the earth, its former existence surviving mainly in the recollections passed down through local families. Whether the enclosure bank predates those houses by centuries or was simply reused as a convenient boundary is not resolved, and that ambiguity is part of what makes the site interesting. Overlooking all of this to the south-east is Knockmaa, a hill with its own considerable weight in local mythology, which gives the spot a sense of being situated within a longer, layered landscape rather than standing apart from it.