Passage 3.23.2
πλέοντι δὲ ἐκ Βοιῶν τὴν ὑπὸ τὴν ἄκραν τῆς Μαλέας λιμήν ἐστιν ὀνομαζόμενον Νύμφαιον καὶ Ποσειδῶνος ἄγαλμα ὀρθὸν καὶ σπήλαιον θαλάσσης ἐγγύτατα, ἐν δὲ αὐτῷ γλυκέος ὕδατος πηγή· καὶ ἄνθρωποι περιοικοῦσι πολλοί. περιπλεύσαντι δὲ τὴν ἄκραν τῆς Μαλέας καὶ ἑκατὸν στάδια ἀποσχόντι, ἐπὶ θαλάσσῃ χωρίον ἐν ὅροις Βοιατῶν Ἀπόλλωνος μὲν ἱερόν ἐστιν, Ἐπιδήλιον δὲ ὀνομαζόμενον·
Sailing from Boiae, beneath the headland of Malea, there is a harbor called Nymphaion and a standing statue of Poseidon. Very close by is a cave by the sea, and within it a spring of sweet water; many people dwell nearby. About a hundred stades after you have navigated around Cape Malea, there is a coastal place on the border of the territory of the Boeatae which contains a sanctuary of Apollo called Epidelion.