Known as a cup-mark, this kind of carved depression appears on prehistoric monuments across Ireland and Britain, yet its purpose remains genuinely unresolved. Ritual, territorial, astronomical, or simply decorative, nobody knows for certain, and that uncertainty is part of what makes finding one on an otherwise plain upright stone quietly arresting.

The stone itself stands 2.65 metres tall, relatively slender at 0.80 metres wide and only 0.23 metres thick, with its long axis oriented north to south. That flat top is unusual; many standing stones taper or come to a rough point, so the deliberate horizontal finish here suggests some care was taken in the shaping or selection of the slab. Whether the north-south alignment was intentional, perhaps connected to solar or lunar observation as has been proposed for other Irish standing stones, is unknown for this particular example. Standing stones of this type were raised during the Bronze Age in many cases, though precise dating for individual stones is rarely possible without excavation. They appear across the Irish landscape as solitary markers, sometimes near burial sites or field boundaries, sometimes with no obvious association at all, which adds to their persistent strangeness.