Battle of Thermopylae at Thermopylae, the Persians sent a mounted scout to reconnoitre. The Greeks allowed him to come up to the camp, observe them, and depart. Xerxes found the scout's reports of the size of the Greek force, and that the Spartans were indulging in callisthenics and combing their long hair, laughable. Seeking the counsel of Demaratus, an exiled Spartan king in his retinue, Xerxes was told the Spartans were preparing for battle, and it was their custom to adorn their hair when they were about to risk their lives. Demaratus called them "the bravest men in Greece" and warned the Great
Thermopylae her older local cults, and perhaps a reference to the gates of Hades. A Greek myth mentioned that Heracles had jumped into the river in an attempt to wash off the Hydra poison infused in the cloak which he could not take off. The river has become hot and stayed that way ever since. Thermopylae is primarily known for the battle that took place there in 480 BC, in which an outnumbered Greek force probably of seven thousand (including the famous 300 Spartans, 500 warriors from Tegea, 500 from Mantinea, 120 from Arcadian Orchomenos, 1000 from the rest of Arcadia,