The problem is that nobody has been able to find it. The outcrop in question is modest, roughly a metre across, and carries one of the most common motifs in Irish prehistoric carving: a cupmark, which is a small, deliberately ground hollow in the rock surface, here enclosed within two concentric rings. This cup-and-ring design appears across Atlantic Europe from the Neolithic into the Bronze Age, carved into exposed rock faces and boulders with a persistence that suggests real significance, though what that significance was remains genuinely unknown.

The carving was documented by archaeologists Audrey O'Sullivan and John Sheehan in their 1996 survey of the Iveragh Peninsula, where it appears as entry 275. At that point the outcrop was only partially exposed, sitting at around 210 metres above sea level in upland heath pasture to the north-west of a cluster of small enclosed fields. When investigators returned to inspect the site more recently, they found the area blanketed in bog, dense tussocks of purple moor-grass, and furze. None of the stones they examined carried the described carving. The rock art is most likely still present beneath the vegetation, swallowed rather than destroyed.

That condition of being lost-but-not-gone gives this site a particular quality. The landscape around Coomasaharn is open and exposed, with views southward over the lake, and the slope itself would not be difficult to traverse in reasonable weather. But anyone hoping to locate the carving should understand that field investigators with a grid reference and a specific description failed to turn it up. The outcrop may eventually re-emerge if peat levels shift or vegetation is disturbed, but for now it remains part of a much larger pattern across Ireland, where prehistoric marks on stone slip in and out of legibility depending on what grows over them.