Man-made underground passage in Letter East

In pasture, on a SE-facing slope overlooking Dunmanus Bay. According to local information, the underground passages of a Man-made underground passage were discovered in the course of land reclamation some years ago. It was filled in and no further work was carried out in that area. A partially grass-covered D-shaped earthen mound (19m N-S; 18m E-W; H 2m) occupies the area. The above description is derived from 'The Archaeological Inventory of County Cork. Volume 5' (Dublin: Stationery Office, 2009). Date of upload: 22 December 2009