This river runs in a narrow vale, between two mountains, one of which the natives call Aeropus, and the other Asnaus, affording a passage of very little breadth along the bank.

He ordered Athenagoras, with the light infantry, to take possession of Asnaus, and to fortify it.

His own camp he pitched on Aeropus.

Those places where the rocks were steep, were defended by guards of a few soldiers only; the less secure he strengthened, some with trenches, some with ramparts, and others with towers.

A great number of engines, also, were disposed in proper places, that, by means of weapons thrown from these, they might keep the enemy at a distance.