Measuring 0.65 metres high, 0.77 metres wide, and 0.47 metres thick, this east-west oriented monument bore the marks of ancient hands; 14 shallow cup-marks decorated its southern face, with another on the western face and 18 more scattered across its top surface. These cup-marks, small circular depressions carved into the stone, represent one of Ireland's most enigmatic forms of prehistoric art, their purpose still debated by archaeologists.

The stone was documented during the comprehensive Archaeological Survey of County Donegal in the early 1980s, when photographer Paul Walsh captured what would become one of the last images of the monument in situ. By June 2013, however, local reports confirmed the standing stone had vanished from its ancient position. What remained was far less romantic; a subcircular hole roughly 1.1 metres long and up to 0.6 metres deep, containing only a large stone, some rope, and naturally occurring rocks along its northern edge.

This disappearance adds the Doon Glebe standing stone to a growing list of Ireland's lost archaeological treasures, monuments that have fallen victim to development, agriculture, or perhaps deliberate removal. The cup-marked stones of Ireland, dating potentially from the Bronze Age, represent a tradition of rock art found across Atlantic Europe, and each loss diminishes our understanding of these prehistoric communities who marked their landscape with symbols whose meaning remains tantalisingly out of reach.