This single-ringed monument, marked on the 2nd edition of the Ordnance Survey 6-inch map, has largely disappeared beneath centuries of development and agricultural use. Today, only the vaguest traces of its stone-walled enclosure remain visible to the keen-eyed observer.

The site’s elevated position was no accident; these ringforts, or cashels as stone-built versions are known, were typically constructed on natural rises that commanded views of the surrounding countryside. Such strategic placement served both defensive and administrative purposes for the farming families who inhabited them between roughly 500 and 1200 AD. While thousands of these monuments once dotted the Irish landscape, many have suffered the same fate as Tullanree’s cashel, gradually eroded by time, stone robbing, and land improvement.

The archaeological record of this particular site comes from the comprehensive 1983 Archaeological Survey of County Donegal, compiled by Brian Lacey and his team. Their work, which catalogued field antiquities from the Mesolithic period through to the 17th century, helps preserve knowledge of monuments that might otherwise be completely forgotten. Though little remains of Tullanree’s cashel today, its inclusion in historical surveys ensures its place in the broader narrative of Donegal’s rich archaeological heritage.