Strabo, Geography

But as regards Halus and Alope, historians are thoroughly in doubt, suspecting that the poet does not mean the places so named which now are classed in the Phthiotic domain, but those among the Locrians, since the dominion of Achilles extended thus far, just as it also extended as far as Trachin and the Oetaean country; for there is both a Halus and a Halius on the seaboard of the Locrians, just as there is also an Alope. Some substitute Halius for Alope and write as follows: “"and those who dwelt in Halus and in Halius and in Trachin."
”¹The Phthiotic Halus is situated below the end of Othrys, a mountain situated to the north of Phthiotis, bordering on Mount Typhrestus and the country of the Dolopians, and extending from there to the region of the Maliac Gulf. Halus (either feminine or masculine, for the name is used in both genders) is about sixty stadia distant from Itonus.² It was Athamas who founded Halus, but in later times, after it had been wiped out, the Pharsalians colonized the place. It is situated above the Crocian Plain; and the Amphrysus River flows close to its walls. Below the Crocian Plain lies Phthiotic Thebes. Halus is called both Phthiotic and Achaean Halus, and it borders on the country of the Malians, as do also the spurs of Othrys Mountain. And just as the Phylace, which was subject to Protesilaüs, is in that part of Phthiotis which lies next to the country of the Malians, so also is Halus; it is about one hundred stadia distant from Thebes, and it is midway between Pharsalus and the Phthiotae. However, Philip took it away from the Phthiotae and assigned it to the Pharsalians. And so it comes to pass, as I have said before,³ that the boundaries and the political organizations of tribes and places are always undergoing changes. So, also, Sophocles speaks of Trachinia as belonging to Phthiotis. And Artemidorus places Halus on the seaboard, as situated outside the Maliac Gulf, indeed, but as belonging to Phthiotis; for proceeding thence in the direction of the Peneius, he places Pteleum after Antron, and then Halus at a distance of one hundred and ten stadia from Pteleum. As for Trachin, I have already described it,⁴ and the poet mentions it by name.