Standing 1.65 metres tall and roughly 1.2 metres wide at its broadest, the stone is irregular in shape, neither dressed nor particularly imposing, yet it has been placed with some deliberateness: its alignment runs northwest to southeast, a orientation that recurs often enough among prehistoric standing stones in Ireland to suggest intention rather than accident.

Standing stones, sometimes called galláin in Irish, are among the most enigmatic monuments in the Irish countryside. They were erected primarily during the Bronze Age, roughly between 2500 and 500 BC, and their purposes remain debated. Some appear to mark boundaries, trackways, or burial sites; others seem aligned to solar or lunar events; many resist any tidy explanation. The Carhoo stone belongs to a particularly dense concentration of such monuments in West Cork, a region where megalithic activity of various kinds left a lasting impression on the land. Whether this particular stone once stood in relation to other features nearby, whether a cairn, a cist burial, or another stone, is not recorded. What survives is the stone itself, set into pasture ground with the bay spread out to the south.