When Darius came into the desolate country, he halted in his pursuit and camped on the Oarus river, where he built eight great forts, the ruins of which were standing even in my lifetime, all at an equal distance of about seven miles from one another. While he was occupied with these, the Scythians whom he was pursuing doubled north and turned back into Scythia. Then, when they had altogether vanished and were no longer within the Persians' sight, Darius left those forts only half finished, and he too doubled about and marched west, thinking that those Scythians were the whole army, and that they were fleeing toward the west.