Indicated

The following description is derived from both the published 'Archaeological Inventory of County Louth' (Dublin: Stationery Office, 1986) and the 'Archaeological Survey of County Louth' (Dublin: Stationery Office, 1991). In certain instances the entries have been revised and updated in the light of recent research. Date of upload/revision: 17 July 2007 Situated on a height to the SW of the River Glyde. Oval area (max. dims. 73m E-W, 34m N-S) bounded by cliff edge to N and slight bank (H 1.4m) with external fosse (Wth 2.8m, D 0.4m) on other sides. The external fosse has been incorporated into modern field-drainage systems at WSW, and on the N-NE the cliff edge has been scarped during OPW river drainage. At E of interior is a circular hut site (LH015-015002-) (int. diam. 4.2m) delimited by a slight bank (Wth 1m, H 0.2m). Adjacent to this hut site, on the edge of the interior of the site, are two banks suggesting the former existence of a larger, rectangular hut (LH015-015003-). Historical evidence (CLAJ 1909, 140-1) suggesting a Danish presence at Annagassan from as early as 831 until at least 926 has led to the suggestion that this is a viking longphort. However, the only find associated with the site is a coin hoard of fourteenth-century date from the base of the cliff to the NE of the site (CLAJ 1929, 42-5). This monument is subject to a preservation order made under the National Monuments Acts 1930 to 2014 (PO no. 2/1971) and is a National Monument, in state guardianship: No. 579.

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