To the south, on a clear day, the Fastnet Rock is visible on the horizon; to the north, Dunmanus Bay opens out below. The cairn itself is modest, barely more than waist height and not much wider than a person is tall, roughly 1.45 metres north to south and 1.3 metres east to west, rising to about 0.6 metres. It sits directly on bedrock, built from a mixture of medium-sized stones, many of them rounded and weather-beaten in the way that suggests long exposure rather than recent disturbance.

A cairn, in the Irish archaeological context, is typically a mound of stones raised over a burial or as a landscape marker, often dating to the Bronze Age or earlier. This one carries the ambiguity common to small, undocumented examples: it has been added to or partially rebuilt at some point, which complicates any attempt to read it as an untouched ancient structure. What leans toward genuine antiquity is a combination of factors, the character of the stones themselves, the prominent ridgeline position that would have made sense as a marker in any era, and the fact that local memory, running back as far as anyone has been able to trace, has no account of it being built. It simply always seems to have been there.