Passage 8.28.7
ταῦτα μὲν δὴ ἐνταῦθά ἐστι· κατὰ δὲ τὴν ὁδὸν τὴν ἐκ Γόρτυνος ἐς Μεγάλην πόλιν πεποίηται μνῆμα τοῖς ἀποθανοῦσιν ἐν τῇ πρὸς Κλεομένην μάχῃ. τὸ δὲ μνῆμα τοῦτο ὀνομάζουσιν οἱ Μεγαλοπολῖται Παραιβασίον, ὅτι ἐς αὐτοὺς παρεσπόνδησεν ὁ Κλεομένης. Παραιβασίου δὲ ἔχεται πεδίον ἑξήκοντα σταδίων μάλιστα· καὶ πόλεως ἐρείπια Βρένθης ἐστὶν ἐν δεξιᾷ τῆς ὁδοῦ, καὶ ποταμὸς ἔξεισιν αὐτόθεν Βρενθεάτης καὶ ὅσον σταδίους προελθόντι πέντε κάτεισιν ἐς τὸν Ἀλφειόν.
These things, then, stand in this place. On the road leading from Gortys to Megalopolis is a memorial constructed for those who died in battle against Cleomenes. This memorial the Megalopolitans call "Paraibasion" (Treaty-violation), because Cleomenes broke a truce made with them. Next to the Paraibasion is a plain extending approximately sixty stades. On the right side of the road lie the ruins of a city called Brenthe, from which the river Brentheates flows forth and, after running about five stades, joins the Alpheios.