A flat outcrop of pink sandstone at Derrynablaha, in the hills of south Kerry, carries two cup-and-ring motifs, the kind of prehistoric carved marks found across Atlantic Europe, in which a central hollow or cup is surrounded by one or more incised rings. The unusual thing here is that most of the rock surface lies buried beneath roughly fifteen centimetres of encroaching bog peat. Only a portion is exposed, and the motifs sit on that hidden, peat-covered section rather than on the part a visitor can actually see.

The outcrop sits on a rocky knoll at around 169 metres above sea level, about ten metres south of a standing stone, with the Kealduff River valley opening to the north-east and the Ballaghbeama Gap to the north-west. The rock itself is heavily fissured and threaded with milky quartz veins, which give it a rough, fractured character. One of the two rings is notably irregular in outline, a detail first observed by Finlay in 1973 and recorded again by A. O'Sullivan and J. Sheehan in their 1996 archaeological survey of the Iveragh Peninsula. The dimensions of the exposed sandstone surface are modest, roughly 1.7 metres along its north-west to south-east axis and only half a metre across.