Patrick's Causeway (Tochar Phádraigin) is an old pilgrim road to Croagh Patrick in the west of Ireland in County Mayo.
The road is named after Saint Patrick, Ireland's patron saint, but pre-dates Christianity; it was probably built around 350AD, as the main route from Cruachan (seat of the Kings of Connacht) to Cruachan Aigle, the pagan name for Croagh Patrick.
Today the...