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Post 1700 artillery fortification built in the 19th century for the defence of the River Shannon (Kerrigan 1980, 171-4).
The above description is derived from the published 'Archaeological Inventory of County Offaly' (Dublin: Stationery Office, 1997). In certain instances the entries have been revised and updated in the light of recent research.
Date of upload: 23 May 2011
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