This loose slab of stone, which has likely detached from the main outcrop over the millennia, slopes at an 18-degree angle facing south-southwest. Despite its weathered state, the ancient markings remain visible; a faint cup mark and one complete ring carved into its surface, testament to the artistic expression of Ireland's distant ancestors.

The rock art was documented by M.A.M. Van Hoek during his comprehensive survey of Donegal's prehistoric art in 1988, forming part of his wider study published in the Ulster Journal of Archaeology. Van Hoek's methodical recording of these sites has proven invaluable for understanding the distribution and variety of rock art across the county, with this particular example representing the simpler end of the artistic spectrum found throughout the region.

Such cup and ring marks are amongst the most common forms of prehistoric rock art found across Ireland and Britain, typically dating from the Neolithic to the Bronze Age periods. While their exact purpose remains enigmatic, these symbols appear at significant landscape locations and may have served ritual, territorial, or astronomical functions for the communities who created them thousands of years ago.