Some of the Celtic Christian literature that emerged from these centuries took the form of the immram, a word which might be translated perhaps as a ‘wonder-voyage’, a sea journey to an otherworld.* The immrama – The Voyage of Mael Duin’s Boat, The Adventure of Bran and The Voyage of Brendan being among the best known – are set on the seaways. They are narratives of passage, which move easily from the recognizable to the supernatural, fading from known into imagined geographies with minimal indication of transition. In these tales, the actual territories of Scotland, Iceland, Orkney and Shetland are connected by the sea roads with fabled places such as the Hesperides, the Island of the Blessed, also known as the Fortunate Isles (an archipelago that was still marked on charts of the west Atlantic into the fourteenth and fifteenth centuries), and Hy-Brazil, the island of happiness off the west coast of Ireland, where sickness is impossible and contentment assured.
THE OLD WAYS, Robert Macfarlane