Man-made underground passage in Coolnaha North

Located in the W half of a cashel (MA093-009001-). A collapse length of Man-made underground passage passage is evident as a linear depression (Wth 2.3m; D 0.5m) that extends from the cashel wall at WSW into the interior for 7m to the ENE. An in situ roof lintel is visible at the WSW end of the depression. At the ENE, the depression ends at a heap of large stones. The depression is largely sod-covered and its base is colonised by small blackthorn bushes. Compiled by: Jane O’Shaughnessy Date of upload: 14 June 2022