Megalithic structure, Sminver (Carrickboy Ed), Co. Donegal

Megalithic structure, Sminver (Carrickboy Ed), Co. Donegal

During monitoring work for the N15 Bundoran to Ballyshannon bypass in 2004, archaeologists from Irish Archaeological Consultancy discovered what initially appeared to be a megalithic structure at Sminver in County Donegal.

Megalithic structure, Sminver (Carrickboy Ed), Co. Donegal

The feature consisted of a large capstone, measuring roughly 0.75m by 1m, resting atop three upright stones that jutted from the ground. Together, these elements created a small chamber approximately 0.4m in diameter, partially filled with rounded stones about 0.2 to 0.3m across. The entire structure stood 1.5 to 2m high and covered an area of about 4 square metres.

Given the rocky nature of the surrounding landscape, which featured numerous natural outcrops, the team couldn’t immediately determine whether this was genuinely an ancient monument or simply a curious arrangement of natural stones. To resolve the mystery, they conducted a thorough excavation under licence A007/001, carefully removing the capstone and investigating both the chamber interior and a 5m by 5m area around the structure.



The excavation results proved rather anticlimactic; no archaeological material was recovered from within the chamber or the surrounding area. The absence of any artefacts, human remains, or other cultural deposits suggested that what had looked like a possible megalith was likely just a natural rock formation, one of many geological features that can mimic ancient monuments in Ireland’s rugged landscape. The investigation, led by Fintan Walsh, demonstrates the careful approach required when distinguishing between genuine prehistoric structures and natural formations that merely resemble them.

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Sminver (Carrickboy Ed), Co. Donegal
54.49438472, -8.18638681
54.49438472,-8.18638681
Sminver (Carrickboy Ed) 
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