Ringfort (Cashel), Carnaghan, Co. Donegal
On the eastern end of an east-west ridge in County Donegal stands the remains of Dunfinn, a ringfort cashel that appears on 19th-century Ordnance Survey maps.
Ringfort (Cashel), Carnaghan, Co. Donegal
This subcircular enclosure, measuring between 30 and 35 metres in diameter, occupies a strategic position on open mountain terrain, with marshy ground spreading to the north and southeast.
The fortification’s defences make clever use of both natural features and constructed walls. The western side features the most substantial remains; an earthen and stone bank rising two metres high and stretching 21 metres from north to south. This bank connects to a curving stone wall at the southwest corner. Whilst the southern and eastern boundaries rely primarily on the natural drop of the ridge for defence, there’s some evidence suggesting an additional bank may have run along the eastern edge.
The northern perimeter tells a story of past grandeur now fallen to time, with a collapsed stone wall that once curved around to meet the western bank. These ringforts, known locally as cashels when built primarily of stone, were typically constructed between the early medieval period and the 17th century. They served as defended farmsteads for prosperous families, combining practical agricultural needs with defensive capabilities in Ireland’s often turbulent past.





