213. Then when the king was in a strait as to what he should do in the matter before him, Epialtes the son of Eurydemos, a Malian, came to speech with him, supposing that he would win a very great reward from the king; and this man told him of the path which leads over the mountain to Thermopylai, and brought about the destruction of those Hellenes who remained in that place. Afterwards from fear of the Lacedaemonians he fled to Thessaly, and when he had fled, a price was proclaimed for his life by the Deputies,1181 when the Amphictyons met for their assembly at Pylai.1182 Then some time afterwards having returned to Antikyra he was slain by Athenades a man of Trachis. Now this Athenades killed Epialtes for another cause, which I shall set forth in the following part of the history,1183 but he was honoured for it none the less by the Lacedaemonians. 214. Thus Epialtes after these events was slain: there is however another tale told, that Onetes the son of Phanagoras, a man of Carystos, and Corydallos of Antikyra were those who showed the Persians the way round the mountain; but this I can by no means accept: for first we must judge by this fact, namely that the Deputies of the Hellenes did not proclaim a price for the lives of Onetes and Corydallos, but for that of Epialtes the Trachinian, having surely obtained the most exact information of the matter; and secondly we know that Epialtes was an exile from his country to avoid this charge. True it is indeed that Onetes might know of this path, even though he were not a Malian, if he had had much intercourse with the country; but Epialtes it was who led them round the mountain by the path, and him therefore I write down as the guilty man.
215. Xerxes accordingly, being pleased by that which Epialtes engaged to accomplish, at once with great joy proceeded to send Hydarnes and the men of whom Hydarnes was commander;1184 and they set forth from the camp about the time when the lamps are lit. This path of which we speak had been discovered by the Malians who dwell in that land, and having discovered it they led the Thessalians by it against the Phocians, at the time when the Phocians had fenced the pass with a wall and thus were sheltered from the attacks upon them: so long ago as this had the pass been proved by the Malians to be of no value.1185 216. And this path lies as follows:—it begins from the river Asopos, which flows through the cleft, and the name of this mountain and of the path is the same, namely Anopaia; and this Anopaia stretches over the ridge of the mountain and ends by the town of Alpenos, which is the first town of the Locrians towards Malis, and by the stone called Black Buttocks1186 and the seats of the Kercopes, where is the very narrowest part. 217. By this path thus situated the Persians after crossing over the Asopos proceeded all through the night, having on their right hand the mountains of the Oitaians and on the left those of the Trachinians: and when dawn appeared, they had reached the summit of the mountain. In this part of the mountain there were, as I have before shown, a thousand hoplites of the Phocians keeping guard, to protect their own country and to keep the path: for while the pass below was guarded by those whom I have mentioned, the
