This single cupmark, carved into the rock face, sits about 15 metres east of another rock art site known as DON 3. Whilst it may seem unremarkable compared to more elaborate examples of rock art found across Ireland, this solitary marking represents thousands of years of human presence in the area.

Cupmarks are amongst the simplest forms of prehistoric rock art, consisting of small, circular depressions carved or pecked into stone surfaces. These mysterious markings, dating from the Neolithic to the Bronze Age, appear throughout Ireland, Scotland, and other parts of Atlantic Europe. Their exact purpose remains unknown; theories range from territorial markers and astronomical maps to ritual or ceremonial uses. The isolation of this particular cupmark, separated from the cluster at DON 3, raises intriguing questions about why ancient peoples chose this specific outcrop for their carving.

The site was documented by researcher Van Hoek in 1988 as part of a broader survey of rock art in the region. Donegal's wealth of prehistoric monuments, from stone circles to chambered tombs, provides context for understanding these cupmarks as part of a wider sacred or cultural landscape. For those interested in Ireland's ancient past, this humble cupmark offers a tangible connection to the people who once moved through these hills, leaving their enigmatic marks on the stone for reasons we can only imagine.