This imposing stone, measuring 2.25 metres high by 1 metre wide and roughly 60 centimetres thick, is oriented northeast to southwest and bears some of Ireland's most intriguing examples of Neolithic or Bronze Age rock art.

The southeast face of the stone is particularly remarkable, decorated with numerous cupmarks; simple circular depressions carved into the rock surface; alongside more complex cup-and-ring motifs. These designs include concentric circles surrounding central cups, with one particularly elaborate example featuring three rings and a radial line extending outward like a spoke. Perhaps most fascinating is the presence of a carved spiral, a symbol that appears throughout Irish prehistoric art from passage tombs to decorated stones. A solitary cupmark on the northeast side suggests the stone was meant to be viewed and perhaps used from multiple angles.

These mysterious symbols, carved thousands of years ago, continue to puzzle archaeologists and historians. While their exact meaning remains elusive, similar rock art found across Ireland and Britain suggests they held deep significance for the communities who created them, possibly marking territorial boundaries, astronomical alignments, or sacred spaces. The stone's prominent position on pasture land with commanding views across Lough Foyle hints at its importance as a landmark in the ancient landscape, where it has stood sentinel for millennia.