This ancient standing stone rises nearly two metres high; its grey bulk measuring approximately 1.95 metres in height, 0.96 metres across, and 0.26 metres thick. Oriented along an east-west axis, the monolith occupies a commanding position in the landscape, though time has long since obscured its original purpose.

Standing stones like the one at Drumkeelan are amongst Ireland's most enigmatic prehistoric monuments. Dating potentially from the Bronze Age, these silent sentinels were erected by communities whose beliefs and rituals remain largely mysterious to us. Some archaeologists suggest they may have served as territorial markers, whilst others propose astronomical alignments or ceremonial functions. The Drumkeelan stone's east-west orientation might hint at solar significance, though without excavation or further evidence, its true meaning remains locked in prehistory.

This particular monument was documented as part of the comprehensive Archaeological Survey of County Donegal, compiled by Brian Lacey and his team in 1983. The survey catalogued field antiquities spanning from the Mesolithic Period through to the 17th century, creating an invaluable record of Donegal's archaeological heritage. Today, the Drumkeelan standing stone continues its silent vigil over the pasture lands, a tangible link to the ancient peoples who once shaped this corner of Ireland.