181. Thus then have been mentioned those nomad Libyans who live along the seacoast: and above these inland is the region of Libya which has wild beasts; and above the wild-beast region there stretches a raised belt of sand, extending from Thebes of the Egyptians to the Pillars of Heracles. In this belt at intervals of about ten days’ journey there are fragments of salt in great lumps forming hills, and at the top of each hill there shoots up from the middle of the salt a spring of water cold and sweet; and about the spring dwell men, at the furthest limit towards the desert, and above the wild-beast region. First, at a distance of ten days’ journey from Thebes, are the Ammonians, whose temple is derived from that of the Theban Zeus, for the image of Zeus in Thebes also, as I have said before, 708 has the head of a ram. These, as it chances, have also other water of a spring, which in the early morning is warm; at the time when the market fills, 709