Passage 9.34.5
ἐς δὲ τὸ ὄρος τὸ Λαφύστιον καὶ ἐς τοῦ Διὸς τοῦ Λαφυστίου τὸ τέμενός εἰσιν ἐκ Κορωνείας στάδιοι μάλιστα εἴκοσι. λίθου μὲν τὸ ἄγαλμά ἐστιν· Ἀθάμαντος δὲ θύειν Φρίξον καὶ Ἕλλην ἐνταῦθα μέλλοντος πεμφθῆναι κριὸν τοῖς παισί φασιν ὑπὸ Διὸς ἔχοντα τὸ ἔριον χρυσοῦν, καὶ ἀποδρᾶναι σφᾶς ἐπὶ τοῦ κριοῦ τούτου. ἀνωτέρω δέ ἐστιν Ἡρακλῆς Χάροψ ἐπίκλησιν· ἐνταῦθα δὲ οἱ Βοιωτοὶ λέγουσιν ἀναβῆναι τὸν Ἡρακλέα ἄγοντα τοῦ Ἅιδου τὸν κύνα. ἐκ δὲ Λαφυστίου κατιόντι ἐς τῆς Ἰτωνίας Ἀθηνᾶς τὸ ἱερὸν ποταμός ἐστι Φάλαρος ἐς τὴν Κηφισίδα ἐκδιδοὺς λίμνην.
From Coroneia to Mount Laphystium and the sanctuary of Zeus Laphystius is about twenty stades. There stands a stone image of Zeus. They say that Athamas was here about to sacrifice Phrixus and Helle, when Zeus provided for the children a ram whose fleece was golden, and upon this ram they escaped safely. Higher up is Heracles surnamed Charops ("with bright eyes"). According to the Boeotians, this is the place where Heracles ascended leading the Hound of Hades. Descending from Mount Laphystium towards the sanctuary of Athena Itonia, there is the river Phalarus, which flows into Lake Cephisus.