οἱ δὲ Ἕλληνες ἐπείτε ἀπίκατο ἐς τὸν Ἰσθμόν, ἐβουλεύοντο πρὸς τὰ λεχθέντα ἐξ Ἀλεξάνδρου τῇ τε στήσονται τὸν πόλεμον καὶ ἐν οἵοισι χώροισι. ἡ νικῶσα δὲ γνώμη ἐγίνετο τὴν ἐν Θερμοπύλῃσι ἐσβολὴν φυλάξαι· στεινοτέρη γὰρ ἐφαίνετο ἐοῦσα τῆς ἐς Θεσσαλίην καὶ ἅμα ἀγχοτέρη τῆς ἑωυτῶν·
τὴν δὲ ἀτραπόν, διʼ ἣν ἥλωσαν οἱ ἁλόντες Ἑλλήνων ἐν Θερμοπύλῃσι, οὐδὲ ᾔδεσαν ἐοῦσαν πρότερον ἤ περ ἀπικόμενοι ἐς Θερμοπύλας ἐπύθοντο Τρηχινίων. ταύτην ὦν ἐβουλεύσαντο φυλάσσοντες τὴν ἐσβολὴν μὴ παριέναι ἐς τὴν Ἑλλάδα τὸν βάρβαρον, τὸν δὲ ναυτικὸν στρατὸν πλέειν γῆς τῆς Ἱστιαιώτιδος ἐπὶ Ἀρτεμίσιον. ταῦτα γὰρ ἀγχοῦ τε ἀλλήλων ἐστὶ ὥστε πυνθάνεσθαι τὰ κατὰ ἑκατέρους ἐόντα, οἵ τε χῶροι οὕτω ἔχουσι.
When the Hellenes had returned to the Isthmus, they deliberated, having regard to that which had been said by Alexander, where and in what regions they should set the war on foot: and the opinion which prevailed was to guard the pass at Thermopylai; for it was seen to be narrower than that leading into Thessaly, and at the same time it was single, and nearer also to their own land; and as for the path by means of which were taken those of the Hellenes who were taken by the enemy at Thermopylai, they did not even know of its existence until they were informed by the people of Trachis after they had come to Thermopylai. This pass then they resolved to guard, and not permit the Barbarian to go by into Hellas; and they resolved that the fleet should sail to Artemision in the territory of Histiaia: for these points are near to one another, so that each division of their forces could have information of what was happening to the other. And the places are so situated as I shall describe.
τοῦτο μὲν τὸ Ἀρτεμίσιον· ἐκ τοῦ πελάγεος τοῦ Θρηικίου ἐξ εὐρέος συνάγεται ἐς στεινὸν ἐόντα τὸν πόρον τὸν μεταξὺ νήσου τε Σκιάθου καὶ ἠπείρου Μαγνησίης· ἐκ δὲ τοῦ στεινοῦ τῆς Εὐβοίης ἤδη τὸ Ἀρτεμίσιον δέκεται αἰγιαλός, ἐν δὲ Ἀρτέμιδος ἱρόν.
ἡ δὲ αὖ διὰ Τρηχῖνος ἔσοδος ἐς τὴν Ἑλλάδα ἐστὶ τῇ στεινοτάτη ἡμίπλεθρον. οὐ μέντοι κατὰ τοῦτό γε ἐστὶ τὸ στεινότατον τῆς χώρης τῆς ἄλλης, ἀλλʼ ἔμπροσθέ τε Θερμοπυλέων καὶ ὄπισθε, κατὰ τε Ἀλπηνοὺς ὄπισθε ἐόντας ἐοῦσα ἁμαξιτὸς μούνη, καὶ ἔμπροσθε κατὰ Φοίνικα ποταμὸν ἀγχοῦ Ἀνθήλης πόλιος ἄλλη ἁμαξιτὸς μούνη.
τῶν δὲ Θερμοπυλέων τὸ μὲν πρὸς ἑσπέρης ὄρος ἄβατόν τε καὶ ἀπόκρημνον, ὑψηλόν, ἀνατεῖνον ἐς τὴν Οἴτην· τὸ δὲ πρὸς τὴν ἠῶ τῆς ὁδοῦ θάλασσα ὑποδέκεται καὶ τενάγεα. ἔστι δὲ ἐν τῇ ἐσόδῳ ταύτῃ θερμὰ λουτρά, τὰ Χύτρους καλέουσι οἱ ἐπιχώριοι, καὶ βωμὸς ἵδρυται Ἡρακλέος ἐπʼ αὐτοῖσι. ἐδέδμητο δὲ τεῖχος κατὰ ταύτας τὰς ἐσβολάς, καὶ τό γε παλαιὸν πύλαι ἐπῆσαν.
ἔδειμαν δὲ Φωκέες τὸ τεῖχος δείσαντες, ἐπεὶ Θεσσαλοὶ ἦλθον ἐκ Θεσπρωτῶν οἰκήσοντες γῆν τὴν Αἰολίδα τήν νῦν ἐκτέαται. ἅτε δὴ πειρωμένων τῶν Θεσσαλῶν καταστρέφεσθαι σφέας, τοῦτο προεφυλάξαντο οἱ Φωκέες, καὶ τὸ ὕδωρ τὸ θερμὸν τότε ἐπῆκαν ἐπὶ τὴν ἔσοδον, ὡς ἂν χαραδρωθείη ὁ χῶρος, πᾶν μηχανώμενοι ὅκως μή σφι ἐσβάλοιεν οἱ Θεσσαλοὶ ἐπὶ τὴν χώρην.
τὸ μέν νυν τεῖχος τὸ ἀρχαῖον ἐκ παλαιοῦ τε ἐδέδμητο καὶ τὸ πλέον αὐτοῦ ἤδη ὑπὸ χρόνου ἔκειτο· τοῖσι δὲ αὖτις ὀρθώσασι ἔδοξε ταύτῃ ἀπαμύνειν ἀπὸ τῆς Ἑλλάδος τὸν βάρβαρον. κώμη δὲ ἐστὶ ἀγχοτάτω τῆς ὁδοῦ Ἀλπηνοὶ οὔνομα· ἐκ ταύτης δὲ ἐπισιτιεῖσθαι ἐλογίζοντο οἱ Ἕλληνες.
As to Artemision first, coming out of the Thracian Sea the space is contracted from great width to that narrow channel which lies between the island of Skiathos and the mainland of Magnesia; and after the strait there follows at once in Euboea the sea-beach called Artemision, upon which there is a temple of Artemis. Then secondly the passage into Hellas by Trechis is, where it is narrowest, but fifty feet wide: it is not here however that the narrowest part of this whole region lies, but in front of Thermopylai and also behind it, consisting of a single wheel-track only both by Alpenoi, which lies behind Thermopylai and again by the river Phoinix near the town of Anthela there is no space but a single wheel-track only: and on the West of Thermopylai there is a mountain which is impassable and precipitous, rising up to a great height and extending towards the range of Oite, while on the East of the road the sea with swampy pools succeeds at once. In this passage there are hot springs, which the natives of the place call the “Pots,” and an altar of Heracles is set up near them. Moreover a wall had once been built at this pass, and in old times there was a gate set in it; which wall was built by the Phokians, who were struck with fear because the Thessalians had come from the land of the Thesprotians to settle in the Aiolian land, the same which they now possess. Since then the Thessalians, as they supposed, were attempting to subdue them, the Phokians guarded themselves against this beforehand; and at that time they let the water of the hot springs run over the passage, that the place might be converted into a ravine, and devised every means that the Thessalians might not make invasion of their land. Now the ancient wall had been built long before, and the greater part of it was by that time in ruins from lapse of time; the Hellenes however resolved to set it up again, and at this spot to repel the Barbarian from Hellas: and very near the road there is a village called Alpenoi, from which the Hellenes counted on getting supplies.
οἱ μέν νυν χῶροι οὗτοι τοῖσι Ἕλλησι εἶναι ἐφαίνοντο ἐπιτήδεοι· πάντα γὰρ προσκεψάμενοι καὶ ἐπιλογισθέντες ὅτι οὔτε πλήθεϊ ἕξουσι χρᾶσθαι οἱ βάρβαροι οὔτε ἵππῳ, ταύτῃ σφι ἔδοξε δέκεσθαι τὸν ἐπιόντα ἐπὶ τὴν Ἑλλάδα. ὡς δὲ ἐπύθοντο τὸν Πέρσην ἐόντα ἐν Πιερίῃ, διαλυθέντες ἐκ τοῦ Ἰσθμοῦ ἐστρατεύοντο αὐτῶν οἳ μὲν ἐς Θερμοπύλας πεζῇ, ἄλλοι δὲ κατὰ θάλασσαν ἐπʼ Ἀρτεμίσιον.
These places then the Hellenes perceived to be such as their purpose required; for they considered everything beforehand and calculated that the Barbarians would not be able to take advantage either of superior numbers or of cavalry, and therefore they resolved here to receive the invader of Hellas: and when they were informed that the Persian was in Pieria, they broke up from the Isthmus and set forth for the campaign, some going to Thermopylai by land, and others making for Artemision by sea.