Whether it fell of its own accord, was pushed, or was never fully raised in the first place is unclear, but its dimensions, 2.35 metres long, 0.55 metres wide, and 0.4 metres thick, and its notably regular shape, identify it as a pillar stone, the kind of upright megalith that prehistoric communities placed singly across the Irish landscape for purposes that remain genuinely uncertain.

What makes its position on the Bolus Mountain slope particularly interesting is the company it keeps. About 15 metres to its south sits a small cashel, a roughly circular dry-stone enclosure of the sort used in early medieval Ireland as a farmstead or settlement boundary. And 167 metres to the north lies a stone row, a linear arrangement of standing stones that belongs to a tradition of monument-building concentrated especially in south-west Munster. These three features, the prostrate pillar, the cashel, and the stone row, occupy the same hillside without any obvious single explanation for their proximity, which is rather the nature of the Iveragh Peninsula as a whole. The area around Cill Rialaigh carries a density of prehistoric and early medieval remains that reflects millennia of continuous human activity on this Atlantic-facing landscape.