15. These rocks, when the Argo, the first of all ships, hastening to Colchis to carry off the golden fleece, had passed unhurt by them, stood immovable for the future, the power of the whirlwind which used to agitate them being broken; and are now so firmly united that no one who saw them now would believe that they had ever been separated; if all the poems of the ancients did not agree on the point. 16. After this portion of Bithynia, the next provinces are Pontus and Paphlagonia, in which are the noble cities of Heraclea, and Sinope, and Polemonium, and Amisus, and Tios, and Amastris, all originally founded by the energy of the Greeks; and Cerasus, from which Lucullus brought the cherry, and two lofty islands which contain the famous cities of Trapezus and Pityus. 17. Beyond these places is the Acherusian cave, which the natives call Μυχοπόντιον; and the harbour of Acone, and several rivers, the Acheron, the Arcadius, the Iris, the Tibris, and near to that the Parthenius, all of which proceed with a rapid stream into the sea. Close to them is the Thermodon, which rises in Mount Armonius, and flows through the forest of Themiscyra, to which necessity formerly compelled the Amazons to migrate. 18. The Amazons, as may be here explained, after having ravaged their neighbours by bloody inroads, and overpowered them by repeated defeats, began to entertain greater projects; and perceiving their own strength to be superior to their neighbours', and being continually covetous of their possessions, they forced their way through many nations, and attacked the Athenians. But they were routed in a fierce battle, and their flanks being uncovered by cavalry, they all perished. 19. When their destruction became known, the rest, who had been left at home as unwarlike, were reduced to the last extremities; and fearing the attacks of their neighbours, who would now retaliate on them, they removed to the more quiet district of the Thermodon. And after a long time, their posterity again becoming numerous, returned in great force to their native regions, and became in later ages formidable to the people of many nations. 20. Not far from hence is the gentle hill Carambis, on the north, opposite to which, at a distance of 2,500 furlongs, is the Criu-Metopon, a promontory of Taurica. From this spot the whole of the sea-coast, beginning at the river Halys, is like the chord of an arc fastened at both ends. 21. On the frontiers of this district are the Dahæ,[125] the fiercest of all warriors; and the Chalybes, the first people who dug up iron, and wrought it to the use of man. Next to them lies a large plain occupied by the Byzares, the Saqires, the Tibareni, the Mosynæci, the Macrones and the Philyres, tribes with which we have no intercourse.