saint patricks purgatory

Pettigo is a village where the border separating the Republic of Ireland from Northern Ireland runs. It is a handsome village and is the main centre for pilgrims visiting Lough Derg.
Turn left in the village and follow the signs to Lough Derg.
The island on this south-east Donegal lake has received pilgrims from all over Europe since early Christian times. Known as St. Patrick's, as he reputedly, did penance here. Only pilgrims are allowed on the island during the summer pilgrimage season.
The octagonal church, which can be seen from the mainland, was built in 1921.