The monument appears on historical Ordnance Survey maps; marked as ‘Standing Stone’ on the 2nd edition 6-inch map and later recorded as ‘Gallan (site of)’ on the 3rd edition. The Irish word ‘gallán’ refers to a pillar stone, typically a prehistoric monument that would have stood upright in the landscape for thousands of years.

The stone’s location on the edge of a small ridge of good agricultural land suggests it may have served as a territorial marker or held ritual significance for the communities who erected it. Standing stones are found throughout Ireland and date primarily from the Bronze Age (2500–500 BCE), though some may be earlier or later. They range from simple upright boulders to carefully shaped pillars, and whilst their exact purpose remains uncertain, they likely served multiple functions including marking burial sites, defining boundaries, or acting as focal points for ceremonies.

Though the Bellanascaddan stone has vanished from the physical landscape, its documentation in the Archaeological Survey of County Donegal preserves its place in the county’s rich archaeological record. The survey, compiled in 1983 by Brian Lacey and his team, provides a comprehensive catalogue of Donegal’s field antiquities from the Mesolithic period through to the 17th century, ensuring that even lost monuments like this one remain part of our understanding of Ireland’s ancient past.