Man-made underground passage in Brownhall Demesne

A slight depression might indicate the location of this 'cave' which was marked as being just E of a cashel (DG104-005-) on the 2nd edition of the OS 6-inch map. The above description was derived from the 'Archaeological Survey of County Donegal. A description of the field antiquities of the County from the Mesolithic Period to the 17th century.' Compiled by: Brian Lacey with Eamon Cody, Claire Cotter, Judy Cuppage, Noel Dunne, Vincent Hurley, Celie O'Rahilly, Paul Walsh and Seán Ó Nualláin (Lifford: Donegal County Council, 1983). In certain instances the entries have been revised and updated. Date of upload: 22 September 2008