It measures barely a metre and a half at its longest and rises only about fifteen centimetres at its western edge, almost flush with the ground. What makes it remarkable is not its size but what has been worked into its surface: a series of prehistoric carvings that required patience, purpose, and considerable skill to produce in stone.

The decorated area, roughly 75 by 50 centimetres, carries several distinct motifs. Cup-and-ring marks, a form of prehistoric rock art found widely across Atlantic Europe and dating broadly to the Neolithic and Bronze Age periods, consist of a small circular depression, the cupmark, surrounded by one or more carved rings. Here, two faint cup-and-one-ring motifs sit near the centre of the surface, each around 18 centimetres across, their rings worn to a shallow depth of one or two millimetres. To the south-east of these, a larger cup-and-two-ring motif dominates, stretching up to 33 centimetres east to west, its outer rings almost squared rather than truly circular, a subtle irregularity that gives the carving an angular, deliberate quality. Additional cupmarks appear at the northern and southern margins of the decorated surface, and a third, tiny cupmark, barely one and a half centimetres across, has been placed on a lower step of the stone to the east. There are also possible traces of linear grooves running across the centre, though these are difficult to confirm. A second rock art site lies approximately 50 metres to the south-west, suggesting this part of the heath held some significance for the communities who worked these stones.

The boulder looks out over the Behy river valley to the north-east, with the Seefin and Droum Mountains rising in the background. Whether the placement was deliberate, orientated towards the valley or the hills beyond, is something the stone does not resolve. The carvings offer no obvious narrative, only the quiet fact of their making.