What makes it quietly strange is the layering of human marks across deep time: the upper stone carries eight definite cup-marks and three possible ones, those shallow circular depressions that prehistoric people ground into rock surfaces across Ireland and much of Atlantic Europe. Their purpose remains genuinely unknown. Ritual, territorial, astronomical, and commemorative explanations have all been proposed, and none has settled the matter. Carved perhaps four or five thousand years ago, they sit now in an ordinary field in Coumduff, Co. Kerry, sharing their stone with a date someone scratched into the rock beneath: 11 August 1950.

That inscription on the larger outcrop below, measuring 2.7 metres by 2.9 metres, is the site's most unexpected detail. It places an anonymous twentieth-century visitor at this exact spot, doing what people apparently cannot help doing when they encounter a significant stone: adding themselves to it. Whether they knew they were annotating a prehistoric monument is impossible to say. The upper stone itself, measuring 1.4 metres by 1.15 metres, also has two shallow possible cup-marks near the southern end of its eastern edge, suggesting the impulse to mark the surface may have continued, or overlapped, across the larger base rock. The site was documented by J. Cuppage in the 1986 Corca Dhuibhne archaeological survey of the Dingle Peninsula, a detailed record of the extraordinary concentration of prehistoric and early historic monuments that survives in this corner of Kerry.