This impressive standing stone measures 1.65 metres tall, a metre wide, and 0.7 metres thick, oriented along a north-northwest to south-southeast axis. The stone occupies a prominent position in the landscape, about 36 metres west of where archaeologists discovered a cist burial in 1976, suggesting this area held special significance for ancient communities.

The western face of the stone bears the faint outline of a cross, carved into its surface at some point in the early Christian period. When antiquarian George Henry Kinahan documented the monument in the 1880s, he recorded two crosses inscribed on the stone, though time and weather have taken their toll; today only one badly eroded cross remains visible. This combination of prehistoric standing stone and Christian symbolism tells a familiar Irish story of cultural continuity, where sacred sites were adopted and reimagined by successive generations rather than abandoned.

The stone at Carrickballydooey represents one of many such monuments scattered across Donegal’s landscape, each marking places that held meaning for communities stretching back thousands of years. Its survival, despite centuries of exposure to Atlantic weather, agricultural changes, and shifting land use, makes it a tangible link to both the prehistoric peoples who first erected it and the early Christians who later claimed it with their own sacred marks.