Though marked as a ‘Standing Stone’ on modern maps, this ancient monument curiously doesn’t appear on the first edition Ordnance Survey 6-inch map, suggesting either its relatively recent discovery or perhaps a long period of obscurity in local memory. The stone commands an impressive position overlooking a valley, with particularly striking vistas stretching westward across the Donegal landscape.

The exact age and purpose of the Roosky Upper stone remain something of a mystery, as is often the case with these prehistoric monuments scattered throughout Ireland. Standing stones, which date from the Bronze Age through to the early medieval period, served various functions in ancient Irish society; some marked burial sites, others delineated territorial boundaries, and many may have held ritual or astronomical significance for the communities that erected them. The reclaimed nature of the land around this particular stone hints at centuries of agricultural change in the area, with the monument standing as a silent witness to the transformation of the landscape from bog or rough pasture to productive farmland.

This description of the standing stone comes from the comprehensive Archaeological Survey of County Donegal, compiled by Brian Lacey and his team in 1983, which catalogued field antiquities from the Mesolithic period right through to the 17th century. The survey represents one of the most thorough archaeological inventories undertaken in Ireland, documenting everything from prehistoric monuments to medieval churches, providing invaluable insights into Donegal’s remarkably rich archaeological heritage.