The carvings cover outcrops and boulders across the head of the Kealduff river valley, a bowl of blanket bog and rough upland pasture enclosed by Mullaghanattin, Knockaunanattin, and Knocklomena mountains. Some sit on the valley floor; others climb the northern and western slopes, positioned so that many of them look directly across to Lough Brin. A further seven decorated stones lie just over the townland boundary in neighbouring Derreeny, at the same valley head, suggesting this was once a much broader ceremonial or territorial landscape.

The motifs themselves belong to the repertoire of prehistoric Atlantic rock art, a tradition found across Ireland, Britain, and into western Europe, typically dated to the Neolithic and Bronze Age periods. The vocabulary is abstract: cupmarks, which are simple shallow depressions pecked into the stone surface; cup-and-ring marks, where one or more concentric rings encircle a central cup; and occasional elaborations such as radial grooves or spiralling outer rings. One small sandstone boulder near the northern end of the complex, on the north-east spur of Mullaghanattin, measures just 1.15 metres by 0.7 metres, yet its entire upper surface carries ten cupmarks, eight cup-and-ring motifs, and three cup-and-two-ring carvings, two of the latter conjoined with penannular outer rings. The most heavily decorated surface in the whole complex lies between two streams on the lower eastern slopes of Mullaghanattin. Nearby, a rocky knoll carries a standing stone alongside three examples of rock art, and a pre-bog trackway, a route that predates the formation of the surrounding peat, runs close to the northernmost carved stone. The site was first systematically recorded by Anati in 1963, who identified fifteen examples, though some of his descriptions were later found to be inaccurate. Finlay added eight more in 1973, and the total now stands at twenty-six. Thirteen of these are scattered along the spine of Mullaghanattin's north-east spur alone, from which the valley opens to the south and, on a clear day, the Beara Peninsula is visible in the distance.