A mysterious small island to the east of Ireland. It is inhabited by gray beings, called Fir Fálgae, who are clad only in their shaggy hair. They are often the antagonists of Irish heroes. One of their prominent kings was Iuchna.
Various commentators, among whom Rudolf Thurneysen, have identified it with the Isle of Man.
- MacKillop, James. (2004). Dictionary of Celtic Mythology. New York: Oxford University Press, Inc.