A cairn is simply a mound of stones, typically used as a burial monument or territorial marker, and this one sits almost at the lip of the escarpment, measuring just over eleven metres across and rising to about 1.2 metres at its eastern side.

What makes this cairn quietly odd is what sits at its centre: a quarry hollow, roughly eight metres by six, sunk half a metre into the ground. This is not unusual in itself, as cairns were often built from stone extracted on the spot, leaving a depression where the material was removed. What is absent here is any evidence of a kerb, the ring of upright or closely set stones that typically defines the outer edge of a prehistoric cairn and signals deliberate, formal construction. Without one, the monument is harder to read. It may have had a kerb that has since been robbed out or buried, or it may simply never have had one, leaving open questions about its date, its purpose, and who built it on this exposed and precipitous northern edge.