Most prehistoric rock art in Ireland consists of cupmarks and ring motifs worn into stone surfaces, familiar and broadly distributed across the landscape. What makes this particular boulder unusual is the presence, on its east-facing surface, of a heptagonal motif enclosing a smaller hexagonal element, with a central cupmark at its heart. Geometric forms with this degree of angular definition are not considered typical rock art, and the motifs have been compared to a hexagonal carving at a nearby site in the same area, suggesting either a shared tradition or possibly the work of the same hands.

The boulder itself is substantial, roughly 4.65 metres east to west and 2.2 metres north to south, and it sits unfractured in a slight depression on a northeast-facing slope at around 179 metres above sea level, at the southeastern edge of a rock scatter in mountain heath and blanket bog. Its two decorated surfaces face in opposite directions. The west-facing aspect, slightly rougher in texture, carries eight small cupmarks, shallow circular depressions pecked into the stone that appear throughout prehistoric Europe and Ireland, their precise meaning still debated. Four of these are enclosed within a substantial oval groove, open to the north where natural fractures in the rock define the boundary. The east-facing surface is smoother and better preserved, and it is here that the angular nested motifs appear with considerably more clarity and definition. The base of the boulder sits in poorly drained ground thick with sphagnum moss, which may have helped protect the lower surfaces over the millennia.

The site looks out over the Behy river valley to the northeast, with the Seefin and Droum Mountains visible in the distance. The boggy ground immediately around the boulder is worth watching underfoot, particularly after wet weather, when the sphagnum cover can conceal uneven or waterlogged patches. The east-facing decorated surface, being the clearer of the two, rewards close and unhurried inspection in good raking light.