Ancient circular prehistoric Grianan of Aileach hilltop ring fort, Greenan Mountain, Inishowen Peninsula, County Donegal, Ireland

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Circular stone ring fort situated at 244 metres on top of Greenan Mountain and thought to have been built in the 6th or 7th century

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Size: 4317px × 6000px
Location: Inishowen Peninsula, County Donegal, Ireland
Photo credit: © HelloWorld Images / Alamy / Afripics
License: Licensed
Model Released: No

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