 To the west it bounded with the territory of Atrax and to the east with that of Scotussa.To the south the ridges of the Revenia separated it from the valley of the river Enipeus.Its most ancient name is said to have been Ephyra (Ὲφύρη or Ὲφύρα), so called prior to the arrival of the Thessalians; and Homer, in his account of the wars of the Ephyri and Phlegyae, is supposed by the ancient commentators to have meant the people afterwards called Crannonians and Gyrtonians respectively.