This is a radial-stone cairn, a form in which upright stones are set pointing inward or outward from the cairn's perimeter, and the example at Dromatouk is a reasonably well-preserved instance of the type. The mound itself is seven metres across and stands about a metre high, its surface largely exposed to reveal stones reaching up to one and a half metres in length. It is the kind of structure that rewards a second look: what first appears to be a rough pile of field clearance resolves, on closer inspection, into something deliberately arranged.

The nine perimeter stones, each roughly half a metre high, define the cairn's outer edge, while four further stones nearer the centre hint at the possibility of an inner ring. Whether that inner arrangement was always intended as a structural feature or accumulated over time is not settled. By 1846, when the Ordnance Survey recorded the site on its six-inch map, the cairn was already legible as an arc of stones running roughly south-south-east to north, abutting a field boundary. The archaeologist Seán Ó Nualláin discussed the site in 1984, placing it within the broader distribution of radial-stone cairns in Kerry and Cork, a monument type associated with the prehistoric landscape of Munster. That landscape is still quietly present here: a standing stone rises about three metres to the north of the cairn, and roughly two hundred metres to the north-north-east lies a five-stone circle, one of the distinctive small stone circles particular to this part of Ireland, in which five stones are arranged in an oval or circular setting. The clustering of these monuments suggests this stretch of moorland carried some sustained significance across a long span of prehistoric activity.