Passage 8.21.4
Κλειτορίοις δὲ καὶ Διοσκούρων, καλουμένων δὲ θεῶν Μεγάλων ἐστὶν ἱερὸν ὅσον τέσσαρα ἀπέχον στάδια ἀπὸ τῆς πόλεως· καὶ ἀγάλματά ἐστιν αὐτοῖς χαλκᾶ. πεποίηται δὲ καὶ ἐπὶ ὄρους κορυφῆς σταδίοις τριάκοντα ἀπωτέρω τῆς πόλεως ναὸς καὶ ἄγαλμα Ἀθηνᾶς Κορίας.
The Kleitorians have also a sanctuary of the Dioskouroi, whom they call the Great Gods; it lies about four stades distant from the city, and there are bronze statues of them there. They have erected, moreover, on the summit of a mountain, about thirty stades beyond the city, a temple and statue of Athena Koria.