History of the Peloponnesian War

And the oracle having bidden them do it, they sent inhabitants thither, both of their own people and of the neighbours about them, and gave leave also to any that would to go thither out of the rest of Greece, save only to the Ionians, Achaeans, and some few other nations. The conductors of the colony were three Lacedaemonians, Leon, Alcidas, and Damagon.

Who, taking it in hand, built the city which is now called Heracleia from the very foundation, being distant from Thermopylae forty furlongs and from the sea twenty. Also they made houses for galleys to lie under, beginning close to Thermopylae against the very strait, to the end to have them the more defensible.