St Patrick's Purgatory at Lough Derg

Record summary

St Patrick’s Purgatory is a medieval Irish pilgrimage tradition centered on a cave or sacred site on Station Island in Lough Derg. The legend connects the place with a revelatory opening into purgatory, while later pilgrims undertook penitential rituals rather than necessarily entering a literal underworld. The site is important for comparing narrated otherworld journeys with embodied pilgrimage, ecclesiastical regulation, and local sacred geography. Descriptions of the cave, its accessibility, and official responses changed over time, so claims must be anchored to particular medieval accounts.