Passage 10.32.5
καὶ ἐπὶ τούτῳ πρὸ τοῦ σπηλαίου σφίσιν ἀγάλματα οὐ μεγάλα ἐστὶν Ἡρακλέους καὶ Ἑρμοῦ τε καὶ Ἀπόλλωνος, Σπηλαῗται καλούμενοι· τὸ δὲ ἀπέχει ὅσον τριάκοντα τοῦ ἄστεως σταδίους, ὕδατος δέ εἰσιν ἐν αὐτῷ πηγαί· οὔτε δὲ ἔσοδος ἐς αὐτὸ φέρει οὔτε ἐπὶ πολὺ ἡ αὐγὴ δίεισι τοῦ ἡλίου, τοῦ τε ὀρόφου τὰ πλείονα ἐγγυτάτω τοῦ ἐδάφους γίνεται.
In front of this cave there are small statues of Heracles, Hermes, and Apollo, who are called the gods of the cave. The distance from the city to this cave is about thirty stades, and within it are springs of water. There is no easy entrance into the interior, nor does sunlight penetrate far inside, and the greater part of the ceiling is very close to the ground.