"Cyrus now advanced through Arabia, having the Euphrates on his right, five days’ march through the forest. In this region the ground was broken and dark, heaving as the sea. It was covered with pines, and whatever other kinds of shrub or reed grew on it were all odoriferous as perfumes. On the third day Cheirisophus said, “Cast your eyes upon these mountains, and observe how impassable they all are. The only road which you see is steep; and close upon it you may perceive a great multitude of men. The guides whom we have say that there is no other road..."