[1] It obtained its name, like the places called Interamna, from being situated upon a lofty height between the two rivers Maloetas and Mylaon.
[2] According to Greek mythology, it was founded by Orchomenus; but its inhabitants were removed to Megalopolis, upon the establishment of that city (371 BCE).
[3] It continued, however, to exist as a village in the time of Pausanias, who saw there a temple of Poseidon Hippius upon the river Mylaon.
He also mentions, above the river Maloetas, a mountain called Thaumasium, in which was a cave where Rhea took refuge when pregnant with Zeus.
[4] Methydrium is also mentioned by Thucydides,[5] Xenophon, (Anabasis, 4.6.20), Polybius,[6] Pliny the Elder,[7] and Stephanus of Byzantium.