According to residents who recall seeing it, this carved stone monument stood about five feet in length and was crafted from distinctive yellow stone, possibly sandstone or limestone native to the Donegal region. Though the slab had suffered damage and was broken when last observed, its original decorative scheme remained clearly visible; a quartered circle with the quadrants cut out, a design typical of early Christian stone carving in Ireland.

The exact location of this cross-slab at Cill Fhathnaid remains tantalisingly elusive, with archaeological surveys unable to relocate what was once a tangible piece of the area’s religious heritage. Such decorated stone slabs were common throughout medieval Ireland, often marking sacred sites, burial grounds, or serving as boundary markers for ecclesiastical lands. The quartered circle motif, sometimes interpreted as a simplified cross within a circle or as a symbol of the four evangelists, appears on numerous early Christian monuments across the country, particularly in the northwest.

This lost monument joins countless other archaeological features that exist now only in local memory and historical records, casualties of time, weather, and human activity. The documentation of such vanished artefacts, preserved through the Archaeological Survey of County Donegal compiled in 1983, provides invaluable evidence of Ireland’s rich archaeological landscape, even when the physical objects themselves have disappeared. The yellow stone cross-slab of Glencolumbkille serves as a reminder that our understanding of the past often relies as much on oral tradition and community memory as it does on surviving physical remains.