Passage 1.18.7
ἔστι δὲ ἀρχαῖα ἐν τῷ περιβόλῳ Ζεὺς χαλκοῦς καὶ ναὸς Κρόνου καὶ Ῥέας καὶ τέμενος Γῆς τὴν ἐπίκλησιν Ὀλυμπίας. ἐνταῦθα ὅσον ἐς πῆχυν τὸ ἔδαφος διέστηκε, καὶ λέγουσι μετὰ τὴν ἐπομβρίαν τὴν ἐπὶ Δευκαλίωνος συμβᾶσαν ὑπορρυῆναι ταύτῃ τὸ ὕδωρ, ἐσβάλλουσί τε ἐς αὐτὸ ἀνὰ πᾶν ἔτος ἄλφιτα πυρῶν μέλιτι μίξαντες.
Within the enclosure there is an ancient bronze statue of Zeus, as well as a temple dedicated to Cronus and Rhea, and a precinct sacred to Earth, surnamed Olympias. Here, the ground is split apart for about a cubit, and they say that after the deluge in the time of Deucalion the water drained away through this fissure. Into it every year they pour wheat meal mixed with honey.