This ancient canvas, first documented by archaeologist M. A. M. Van Hoek in 1987, forms the eastern section of the area’s main ridge and bears witness to the creative impulses of Ireland’s distant ancestors. The rock art consists of at least 28 cup marks; small, circular depressions carefully pecked into the stone surface thousands of years ago.

The artwork displays an intriguing variety in its execution, with some cups showing deeper, more deliberate carving whilst others appear faintly marked, as if the ancient artists abandoned their work before completion. Four cups on the western side of the outcrop show particularly light pecking, suggesting they may have been left unfinished. The rock surface itself sits mostly horizontal, though its western end slopes gently at about 3 degrees towards the east;southeast, creating a subtle natural gradient that the prehistoric artists incorporated into their design.

Perhaps the most fascinating feature is a cluster of six small cups arranged in what Van Hoek described as a ‘domino pattern’, a geometric configuration that hints at deliberate planning rather than random placement. This type of rock art, whilst seemingly simple, represents one of humanity’s earliest forms of symbolic expression in Ireland. Though we may never fully understand the meaning these markings held for their creators, whether territorial markers, astronomical observations, or ritual significance, they remain an enduring connection to the people who once walked these Donegal hills.