Not indicted

Internal diam. 95m. A large circular area enclosed by a collapsed stone wall, many of the stones of which have been used to build sheep folds against the wall. There is a large amount of rock outcrop inside the enclosure including some on each side of a gap in the wall to the NW which may have been the entrance. It is situated on a slightly higher and drier ridge on a wet boggy hillside above Lough Mourne and the ancient route-way through the Barnesmore Gap to the SW which it commands. Named 'Cashelnabean' on the 1906 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 revised upload: 7 December 2017

A local fairy fort (ringfort/rath); wider significance not recorded.