That uncertainty is itself part of what makes this place interesting. Cupmarks are among the most enigmatic survivals of prehistoric activity in Ireland: shallow, roughly circular depressions hollowed into rock surfaces, whose purpose remains genuinely unknown. They appear across Ireland and Britain from the Neolithic and Bronze Age periods, sometimes in isolation, sometimes in elaborate clusters, and they have a habit of turning up in remote, quietly dramatic landscapes.

This particular boulder, measuring nearly four metres in length, sits at the northern end of the Kealduff River valley in rough boggy pasture. It was recorded in 1999 by a researcher named Desmond, who noted at least two cupmarks on its surface and flagged something already worrying: commercial forestry had been planted to within about thirty centimetres of the stone. That proximity proved significant. When investigators returned to the site in 2002, dense undergrowth had swallowed the boulder entirely and the inspection failed to locate it. A second possible cupmarked stone had also been noted around three metres to the south-west. By 2017, fieldwork identified a rock outcrop matching the original description on a gentle south-east-facing slope about 108 metres above sea level, but it was buried under sod, moss, and accumulated pine needles, and no rock art was visible on the exposed portions. Whether the carvings are simply hidden beneath that organic layer, or were misidentified in the first place, remains an open question.