Passage 6.22.5
Πύλου δὲ τῆς ἐν τῇ Ἠλείᾳ δῆλα τὰ ἐρείπια κατὰ τὴν ἐξ Ὀλυμπίας ἐστὶν ἐς Ἦλιν ὀρεινὴν ὁδόν, ὀγδοήκοντα δὲ στάδια ἐς Ἦλιν ἀπὸ τῆς Πύλου. ταύτην τὴν Πύλον ᾤκισε μὲν κατὰ τὰ ἤδη λελεγμένα μοι Μεγαρεὺς ἀνὴρ Πύλων ὁ Κλήσωνος· γενομένη δὲ ὑπὸ Ἡρακλέους ἀνάστατος καὶ αὖθις ἐπισυνοικισθεῖσα ὑπὸ Ἠλείων, ἔμελλεν ἀνὰ χρόνον οὐχ ἕξειν οἰκήτορας. παρὰ δὲ αὐτὴν ποταμὸς Λάδων κάτεισιν ἐς τὸν Πηνειόν.
The ruins of Pylos in Elis are clearly visible along the mountainous road leading from Olympia to the city of Elis; from Pylos it is eighty stadia to Elis. As I have previously mentioned, this Pylos was founded by Pylon, son of Kleson, a man from Megara. Having been destroyed by Heracles and afterward repopulated once more by the Eleans, the town eventually became deserted again, losing its inhabitants over time. Beside it runs the Ladon River, emptying into the Peneius.