Monument sights in County Roscommon
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A rare Iron Age spiral-inscribed stone can be seen on private land in Castle strange, 7km southwest of town on the R366.
This astonishing portal dolmen, one of the largest in Ireland, measures 4.5m by 3.3m and was constructed before 2000 BC. It can be tricky to find: follow Patrick St and then the R294 out of town for 5km, until you pass under a railway arch. A sign indicates the path across the railway line. Take care crossing as trains are frequent.