The next revolt broke out in 464, when a severe earthquake destroyed Sparta and caused great loss of life; the insurgents defended themselves for some years on the rock-citadel of Ithome, as they had done in the first war; but eventually they had to leave the Peloponnese and were settled by the Athenians at Naupactus in the territory of the Locri Ozolae.
They accordingly built a fleet at Naupactus, but before they set sail, Aristodemus was struck by lightning (or shot by Apollo) and the fleet destroyed, because one of the Heraclidae had slain an Acarnanian soothsayer.
On his way back to Naupactus, Temenus fell in with Oxylus, an Aetolian, who had lost one eye, riding on a horse (thus making up the three eyes) and immediately pressed him into his service.
The Heraclidae repaired their ships, sailed from Naupactus to Antirrhium, and thence to Rhium in Peloponnesus.
This might have been urged with justice before the Thirty Years' Truce (447); but by that truce Athens gave up all her conquests in Greece proper except Naupactus and Plataea, while her solitary gains in Amphipolis and Thurii were compensated by other losses.