Oisín - Between Worlds
The poet who journeyed to the Otherworld and returned to find centuries had passed.
Oisín, son of Fionn, followed Niamh to Tír na nÓg where he lived in bliss. When he returned, three hundred years had passed. The moment he touched the ground of Ireland, he aged instantly. His story warns of the danger of staying too long in the Otherworld.
In the Land of Youth, a day passes like an hour; in Ireland, a year passes like a day there.
Oisín's tale explores Celtic understanding of the different time flow in the Otherworld.
Fenian Cycle
Written about in
- What Celtic tradition says about grief
Oisín followed Niamh to Tír na nÓg, the Land of Youth, where he lived in bliss; when he came home three hundred years had passed, and the moment his foot touched Irish ground he aged all at once. The warning is precise: you may cross into the Otherworld, but you cannot live there, and the return is worse the longer you stay.