An island off the coast of Brittany where Arthur is supposed to be buried.
The legend is associated with the Island of Avalon, sometimes called Aval. The mention of Avalon being off the coast of Brittany might be a variation or interpretation of the legend. Brittany, located in northwestern France, has its own Celtic traditions and folklore that intertwine with Arthurian legends.
See also
Celts | The Legend of King Arthur