Man-made underground passage in Ballyknock (coshmore and Coshbride By.)

Located towards the top of the S-facing slope of a W-E spur. A stone-built, L-shaped Man-made underground passage with large roof-slabs consisting of two passages set at right angles and connected by a creep was discovered in 1983 and was closed after recording. An area of collapse led into a SE-NW passage (L 5.5m plus; Wth 0.75m to 0.38m at NW; H c. 1.1m) with a creep (Wth 0.38m; H 0.67m; L c. 0.6m) at the NW which leads to a NE-SW passage (L 3.7m; Wth 0.45-0.5m; H 0.82-1.08m) that expands slightly at the SW. (Power et al. 1984; Power 1987) Power, C., O’Donnabháin, B. and M. G. O’Donnell (1984) A Man-made underground passage at Rhinercrew, Co. Waterford. Decies, No. 26, 38-40. Power, C. (1987) Three Man-made underground passages in the Cork/Waterford region of Ireland. Subterranea Britannica. Bulletin No. 23, 16-21. The above description is derived from the published 'Archaeological Inventory of County Waterford' (Dublin: Stationery Office, 1999). In certain instances the entries have been revised and updated in the light of recent research. Revised by: Michael Moore Date of upload: 07 October 2011