of the Persians in 549 BC to keep the local administration with the Cilicians. Cilicia became an autonomous satrapy under the reign of Cyrus II. Cilicians were independent in their internal affairs and kept this autonomy for almost 150 years. In 401, Syennesis III and his wife Epyaxa supported the revolt of Cyrus the Younger against his brother Artaxerxes II Mnemon. This was sound policy because otherwise, Cilicia would have been looted by the rebel army. However, after the defeat of Cyrus at Cunaxa, keeping Syennesis' position was difficult. Most scholars assume that this behavior marked the end of the independence of Cilicia. After 400, it became a normal satrapy. Under the Persian empire, Cilicia (in ) was said to be governed by tributary native kings who bore a Hellenized name or the title of "Syennesis", and it was officially included in the fourth satrapy by Darius. Xenophon found a queen in power, and no opposition was offered to the takeover of Cyrus the Younger. Roads The great highway from the west existed before Cyrus conquered Cilicia. On its long rough descent from the Anatolian plateau to Tarsus, it ran through the narrow pass between walls of rock called the Cilician Gates. After crossing the low hills east of the Pyramus it passed through a masonry (Cilician) gate, Demir Kapu, and entered the plain of Issus. From that plain one road ran southward through another masonry (Syrian) gate to Alexandretta, and thence crossed Mt. Amanus by the Syrian Gate, Beilan Pass, eventually to Antioch and Syria. Another road ran northwards through a masonry (Armenian) gate, south of Toprak Kale, and crossed Mt. Amanus by the Armenian Gate, Baghche Pass, to northern Syria and the Euphrates. By the last pass, which was apparently unknown to Alexander, Darius crossed the mountains prior to the battle of Issus. Both passes are short and easy and connect Cilicia Pedias geographically and politically with Syria rather than with Anatolia. Hellenistic period Alexander forded the Halys River in the summer of 333 BC, ending up on the border of southeastern Phrygia and Cilicia. He knew well the writings of Xenophon, and how the Cilician Gates had been "impassable if obstructed by the enemy". Alexander reasoned that by force alone he could frighten the defenders and breakthrough, and he gathered his men to do so. In the cover of night, they attacked, startling the guards and sending