Text #8613History of the Peloponnesian War. Vol. 1 .
[Thuc. 3.89.1. Translated by Benjamin Jowett. Clarendon Press. 1900 pp. 247--248]
In the ensuing summer the Peloponnesians and their allies, under the command of Agis the son of Archidamus, the Lacedaemonian king, came as far as the isthmus. They intended to invade Attica, but were deterred from proceeding by numerous earthquakes and no invasion took place in this year. About the time when these earthquakes prevailed, the sea at Orobiae in Euboea, retiring from what was then the line of coast and rising in a great wave, overflowed a part of the city; and although it subsided in some places, yet in others the inundation was permanent, and that which was formerly land is now sea. All the people who could not escape to the high ground perished.
A similar inundation occurred in the neighbourhood of Atalante, an island on the coast of the Opuntian Locri, which carried away a part of the Athenian fort, and dashed in pieces one of two ships which were drawn up on the beach. At Peparethus also the sea retired, but no inundation followed; an earthquake, however, overthrew a part of the wall, the Prytaneum, and a few houses. I conceive that, where the force of the earthquake was greatest, the sea was driven back, and the suddenness of the recoil made the inundation more violent; and I am of opinion that this was the cause of the phenomenon, which would never have taken place if there had been no earthquake.