What makes it worth a second look is its composite nature: a broad outer cairn, roughly seven metres across but barely a third of a metre high, has a noticeably smaller and looser cairn balanced on top of it, like a cairn placed deliberately upon a cairn.

A cairn, in the simplest sense, is a deliberate accumulation of stones, and in an Irish upland context such features are most commonly associated with prehistoric burial or land marking. The larger structure here, its stones compacted and blanketed in moss, has the character of age; the smaller one sitting on top, its stones comparatively loose, raises the question of whether it belongs to the same moment of construction or represents a later addition by a different hand entirely. The location itself adds a layer of strangeness. Level ground at the edge of a north-facing precipice, in boggy hill pasture, is not an obvious place to settle or farm, which pushes attention back towards ritual or commemorative purposes. Mangerton Mountain, rising above Killarney, has long been associated with dramatic upland landscapes, and the Punchbowl below this spot is one of the more striking features of the Kerry uplands, its name suggesting the sense of theatre that geography alone can generate.