Its entire area may be estimated at about a hundred thousand square miles.

It was thus larger than Great Britain, about the size of Italy, and rather less than half the size of France.

The boundaries were, on the west, Elymais or Susiana (which, however, was sometimes reckoned a part of Persia); on the north, Media; on the east, Carmania; and on the south, the sea.

It is nearly represented in modern times by the two Persian provinces of Farsistan and Laristan, the former of which retains, but slightly changed, the ancient appellation.

The Hindyan or Tab (ancient Oroatis) seems towards its mouth to have formed the western limit.