Castlethird Stone Ringfort

Internal diam. 19m. A subcircular area enclosed by a collapsed stone wall, rebuilt along the S and W sides, and heavily over-grown. The collapse scatter extends as much as 5.5m on the SW side. Lanes run along the E and N sides of the monument. It is situated in good land on the SE slope of Dooish mountain. 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

Castlethird Stone Ringfort is a subcircular early-medieval defensive structure, likely dating to between the 5th and 10th centuries, characterized by a collapsed stone wall and partial later rebuilding. While no specific folklore is recorded, such sites were often associated with local legends involving fairies or ancient inhabitants in Irish tradition.