Man-made underground passage in Mannin

In the SW quadrant of a rath (MA081-033001-). A grassed-over depression (Wth 3.6m; D 0.45m), possibly a collapsed Man-made underground passage passage, extends from an eroded section of the rath bank at SSW for 11m through the interior to NNE where it narrows to 1m in width for a further 3m. A heap of field clearance stones partly fills the NNE end of the depression. Compiled by: Jane O’Shaughnessy Date of upload: 8 December 2021