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Man-made underground passage in Ballynamona

Man-made underground passage

Man-made underground passage in Ballynamona

County Sligo, Ireland

Located on the NE side of the interior of Ballynamona cashel (SL015-066001-), 2m within the internal base of the bank Roughly rectangular U-shaped depression (dims. 4m N-S; Wth Top 1.4m…

They sit almost level with each other across the map.

One real place leads to another.