It protrudes only fifteen centimetres above the soil, subtriangular in outline, fractured and weathered, and easy to walk past without a second glance. What makes it worth stopping for is what has been worked into its surface: two prehistoric carvings, faint enough that light and angle matter considerably when trying to read them. One is a cup-and-ring motif, a circular depression surrounded by a carved ring, a form found across Atlantic Europe from the Neolithic into the Bronze Age and whose precise meaning remains unresolved. The other is a simpler cupmark, a shallow circular hollow about four centimetres across. Together they occupy a decorated band roughly sixty centimetres long on the southwest-facing face of the stone.

The stone sits at around 84 metres above sea level on a northwest-facing slope at An Choill Mhór, with the Brandon Mountain range, Brandon Bay, and the Maharee Islands laid out to the north and northwest, and the higher ground of Slievanea mountain rising to the southwest. Whether that orientation was meaningful to whoever made the carvings is impossible to say, but the placement is not obviously accidental. A related rock art site lies approximately 31 metres to the west-southwest, suggesting this part of the landscape held some concentrations of this kind of activity. The carvings themselves are described as very subtle, with the cup-and-ring motif measuring roughly fifteen centimetres in overall diameter and only two millimetres deep at the ring, which means they reward patience and the right conditions rather than casual inspection.

The stone lies about 40 metres east of a trackway and roughly 75 metres south of the R560 road. Because the motifs are so shallow and the stone sits so low in the ground, overcast or raking low-angle light, particularly in the morning or evening, tends to bring carved surfaces like these into relief far more effectively than flat midday sun.