Marked consistently across all three editions of the Ordnance Survey’s 6-inch maps, this archaeological site presents itself as a collection of undistinguished mounds accompanied by a double line of large stones; features that likely represent the degraded remains of what local records simply call ‘the Fort’.

This unclassified ringfort forms part of Donegal’s rich archaeological landscape, documented comprehensively in the Archaeological Survey of County Donegal. The survey, which catalogues field antiquities spanning from the Mesolithic period through to the 17th century, was compiled by Brian Lacey and his team of researchers in 1983. Their work provides crucial documentation of sites like Tullanree, where centuries of weathering and agricultural activity have reduced once-imposing defensive structures to subtle earthworks barely distinguishable from the natural landscape.

Ringforts such as this one served as fortified farmsteads during Ireland’s early medieval period, typically housing extended families and their livestock within protective earthen banks and ditches. Whilst the Tullanree example may lack the dramatic preservation seen at other sites, its consistent appearance on historical maps and its survival in rough pasture land make it a valuable piece of the archaeological record, offering insights into settlement patterns and land use in this corner of northwest Ireland.