The plantation belongs to a working landscape; the stone does not. It predates every tree around it by millennia, and the contrast between the two is part of what makes Foilnamuck worth knowing about.

The stone measures 1.9 metres in height, roughly a metre across and about half a metre thick, tapering as it rises so that the top is narrower than the base. Its long axis runs northwest to southeast, an orientation that may or may not be deliberate but is a detail often noted in the study of prehistoric standing stones across Ireland, where alignment with solar or lunar events was sometimes, though not always, intended. The site sits on a southwest-facing slope of poorly drained upland ground, the kind of boggy terrain that has paradoxically helped preserve many prehistoric monuments by discouraging later agricultural disturbance. Despite the wet ground and the enclosing trees, the location commands good views in all directions, which suggests the stone's position was chosen with some care, though for what purpose, whether territorial marking, ritual, or something else entirely, remains, as with most standing stones, a matter of informed speculation rather than settled fact.