Thule
Thule ( Ancient Greek: Θούλη, romanized: Thúlē; Latin: Thūlē also spelled as Thylē) is the most northerly location (if not Hyperborea) mentioned in ancient Greek and Roman literature and cartography. First written of by the Greek explorer Pytheas of Massalia (modern-day Marseille, France) in about 320 BC, it was often described by later writers as an island north of Ireland or Britain, despite that Pytheas never explicitly described it as an island.