17. Of the plains, the first reckoning from the sea is called Macras and Macra-pedium. Here Poseidonius says there was seen a serpent lying dead, which was nearly a plethrum in length, and of such a bulk and thickness that men on horseback standing on each side of its body could not see one another; the jaws when opened could take in a man on horseback, and the scales of the skin were larger than a shield. 18. Next to the plain of Macras is that of Massyas, which also contains some mountainous parts, among which is Chalcis, the acropolis, as it were, of the Massyas. The commencement of this plain is at Laodiceia,[594] near Libanus. The Ituræans and Arabians, all of whom are freebooters, occupy the whole of the mountainous tracts. The husbandmen live in the plains, and when harassed by the freebooters, they require protection of various kinds. The robbers have strongholds from which they issue forth; those, for example, who occupy Libanus have high up on the mountain the fortresses Sinna, Borrhama, and some others like them; lower down, Botrys and Gigartus, caves also near the sea, and the castle on the promontory Theoprosopon. Pompey destroyed these fastnesses, from whence the robbers overran Byblus,[595] and Berytus[596] situated next to it, and which lie between Sidon and Theoprosopon. Byblus, the royal seat of Cinyrus, is sacred to Adonis. Pompey delivered this place from the tyranny of Cinyrus, by striking off his head. It is situated upon an eminence at a little distance from the sea. 19. After Byblus is the river Adonis,[597] and the mountain Climax, and Palæ-Byblus, then the river Lycus, and Berytus. This latter place was razed by Tryphon, but now the Romans have restored it, and two legions were stationed there by Agrippa, who also added to it a large portion of the territory of Massyas, as far as the sources of the Orontes. These sources are near Libanus, the Paradeisus, and the Egyptian Fort near the district of Apameia. These places lie near the sea. 20. Above the Massyas is the Royal Valley, as it is called, and the territory of Damascus, so highly extolled. Damascus is a considerable city, and in the time of the Persian empire was nearly the most distinguished place in that country. Above Damascus are the two (hills) called Trachones; then, towards the parts occupied by Arabians and Ituræans promiscuously, are mountains of difficult access, in which were caves extending to a great depth. One of these caves was capable of containing four thousand robbers, when the territory of Damascus was subject to incursions from various quarters. The Barbarians used to rob the merchants most generally on the side of Arabia Felix,[598] but this happens less frequently since the destruction of the bands of the robbers under Zenodorus, by the good government of the Romans, and in consequence of the security afforded by the soldiers stationed and maintained in Syria.