Two other passes, farther to the west, were crossed by the roads from Plataea to Athens and to Megara respectively.
During the Persian invasion of 480 the Phocians at first joined in the national defence, but by their irresolute conduct at Thermopylae lost that position for the Greeks; in the campaign of Plataea they were enrolled on the Persian side.
At Pellene in Achaea, and at Plataea he made two other statues of Athena, also a statue of Aphrodite in ivory and gold for the people of Elis.
In 429 the Peloponnesians were deterred by the plague from invading Attica and laid siege to Plataea in the interests of Thebes.
During the Persian invasion the Tegeans displayed a readiness unusual among Peloponnesian cities; in the battle of Plataea they were the first to enter the enemy's camp. A few years later they headed an Arcadian and Argive league against Sparta, but by the loss of two pitched battles (Tegea and Dipaea) were induced to resume their former loyalty (about 468-467).
Three monuments remain to mark the line of the Spina, around which the chariots whirled; an Egyptian obelisk of Thothmes III., on a pedestal covered with bas-reliefs representing Theodosius I., the empress Galla, and his sons Arcadius and Honorius, presiding at scenes in the Hippodrome; the triple serpent column, which stood originally at Delphi, to commemorate the victory of Plataea 479 B.C.; a lofty pile of masonry, built in the form of an obelisk, and once covered with plates of gilded bronze.
It was said to have been founded by Megarians and Argives under Byzas about 6S7 B.C., but the original settlement having been destroyed in the reign of Darius Hystaspes by the satrap Otanes, it was recolonized by the Spartan Pausanias, who wrested it from the Medes after the battle of Plataea (479 B.C.) - a circumstance which led several ancient chroniclers to ascribe its foundation to him.
In the Peloponnesian War the Thebans, embittered by the support which Athens gave to the smaller Boeotian towns, and especially to Plataea, which they vainly attempted to reduce in 431, were firm allies of Sparta, which in turn helped them to besiege Plataea and allowed them to destroy the town after capture (427).
In the grasp of a more inexorable necessity, the champion of Greek freedom was borne onward to a more tremendous catastrophe than that which strewed the waters of Salamis with Persian wrecks and the field of Plataea with Persian dead; but to him, at least, it was given to proclaim aloud the clear and sure foreboding that filled his soul, to do all that true heart and free hand could do for his cause, and, though not to save, yet to encourage, to console and to ennoble.
The Mycenaeans, who had temporarily regained their independence with the help of Sparta, fought on the Greek side at Plataea in 479 B.C. The long warfare between the two cities lasted till 468 B.C., when Mycenae was dismantled and its inhabitants dispersed.