"Strabo’s Geography XV.1.19 says that Aristobulus of Cassandreia who accompanied Alexander the Great over a thousand years later saw thousands of towns and villages deserted on the Indus, so it too must have been diverted. He reported ‘a deserted zone which contained more than 100 towns with villages dependent on them. The Indus having quit its bed, had moved across to another bed on its left bank, a deeper one…the region formerly inundated on its right bank whose bed it had left, now found itself high and dry above the level of the annual floods.’"