Passage 2.36.3
ἀπὸ Μάσητος δὲ ὁδὸς ἐν δεξιᾷ ἐστιν ἐπὶ ἄκραν καλουμένην Στρουθοῦντα. στάδιοι δὲ ἀπὸ τῆς ἄκρας ταύτης κατὰ τῶν ὀρῶν τὰς κορυφὰς πεντήκοντά εἰσι καὶ διακόσιοι ἐς Φιλανόριόν τε καλούμενον καὶ ἐπὶ Βολεούς· οἱ δὲ Βολεοὶ οὗτοι λίθων εἰσὶ σωροὶ λογάδων. χωρίον δὲ ἕτερον, ὃ Διδύμους ὀνομάζουσι, στάδια εἴκοσιν αὐτόθεν ἀφέστηκεν· ἐνταῦθα ἔστι μὲν ἱερὸν Ἀπόλλωνος, ἔστι δὲ Ποσειδῶνος, ἐπὶ δὲ αὐτοῖς Δήμητρος, ἀγάλματα δὲ ὀρθὰ λίθου λευκοῦ.
From Masetos there is a road on the right leading to a promontory called Strouthous. From this promontory it is two hundred and fifty stades, following along the mountain peaks, to a place called Philanorion and to the cairns called Boleoi; these same Boleoi are heaps of gathered stones. Another place, called Didymoi, lies twenty stades distant from there; here are sanctuaries of Apollo, of Poseidon, and, above these, of Demeter, containing upright statues of white stone.