That ambiguity is rather the point. The stone, known locally as the 'White Rock', lies flat on the ground, oriented roughly north-west to south-east, and measures just 0.9 metres in height, or what would have been its height if it were upright. Whether it was ever erected, or whether it simply sat here all along in some other capacity, remains unresolved. Formally, it is classified as a possible standing stone, which is archaeology's careful way of acknowledging that the evidence does not quite close the case.

The stone itself is modest in scale, roughly rectangular in plan and section, measuring 0.65 metres by 0.45 metres across. All of its faces except the south-western one are thickly covered in lichen, which gives it an aged, almost botanical quality, more like something growing from the ground than placed upon it. Standing stones, when they are confirmed as such, were typically erected during the Bronze Age as single upright monuments, sometimes marking boundaries, burials, or routes through the landscape. This one sits near the southern edge of an east-west ridge, a position that would have offered a commanding view over Roaring Water Bay and the scatter of islands below, which suggests, without proving, that its placement was deliberate. The local name, the 'White Rock', likely reflects the pale colouration of the exposed south-western face, the one side the lichen has not yet claimed.