On the right bank of the river, Bessos was given up by traitors in his camp and was sent south to "Zariaspa" to await his doom. Zariaspa is identified with Balkh by some authorities, but the name is probably a variant on Adraspa which almost certainly was Andarab. Andarab was the fertile and promising district into which Alexander descended from the slopes of the Hindu Kush, by whichever route (Kaoshan or Panjshir) he crossed those mountains. Directly on the route between Andarab and Balkh is a minor province called Baglan, and a little less than half-way (after crossing a local pass of no great significance called Kotal Murgh) is a village or township, nowadays called Zardaspan, which is sufficiently like Zariaspa to suggest an identity which is at least plausible though it may be deceptive. But it is the fact that the town of Baraki which lies farther on the same route is on the outskirts of Baglan; and in this connection a reference to the theory put forward by Dr. Bellew in his _Ethnography of Afghanistan_ (_Asiatic Quarterly_, October 1891) is at least interesting. He points out that the captive Greeks who were transported in the sixth century B.C. by Darius Hystaspes from the Lybian Barké to Baktrian territory were still occupying a village called Barké in the time of Herodotus. A century later again during the Macedonian campaign, Kyrenes, or Kyreneans, existed in that region according to Arrian, and it is difficult to account for them in that part of Asia unless they were the descendants of those same exiles from Barké, a colony of Kyrene whom Darius originally transported to Baktria. They were in possession of the Kaoshan Pass too, and might have rendered very effective aid to Alexander during his passage across the mountains. Another body of Greek colonists are recorded to have been settled in this same part of Baktria by Xerxes after his flight from Greece, namely, the Brankhidai, whose original settlement appears to have been in Andarab. As we shall see later, people from Greece or from Grecian colonies undoubtedly drifted across Asia to Northern Afghanistan in even earlier times than those of the Persian Empire. There can, indeed, be very little doubt that Ariaspa, or Andarab, was an important position for the Greeks to occupy from its strategic value as commanding the most practicable of the Hindu Kush passes.