Fairy fort / earthen ringfort in Killydonagh

Situated at the summit of a prominent drumlin. This is a circular overgrown area (diam. c. 35m) defined by an overgrown earthen bank (at NE: Wth of base 3m; Wth of top 1m; int. H 0.3m; ext. H 1.4m) with an external fosse (at NE: Wth of top 4.5m; Wth of base 3m; ext. D 0.45m), which was re-cut as a drain SE-W-NW. There is a modernised entrance at ESE, but no other entrance was noted. The above description is derived from the published 'Archaeological Inventory of County Monaghan' (Dublin: Stationery Office, 1986). In certain instances the entries have been revised and updated in the light of recent research. Date of revision: 25 July 2017

A fairy fort or earthen ringfort in Killydonagh is a circular early-medieval defensive or habitation site, likely dating to between the 5th and 10th centuries AD. Situated on a prominent drumlin, it is associated with local folklore surrounding fairies and other supernatural beings, common in Irish tradition for such sites.