It is particularly suitable in this place to notice the events which took place at Delphi upon occasion of the memorable invasion of Xerxes into Greece. This was indeed a critical moment for the heathen mythology. The Persians were pointed and express in their hostility against the altars and the temples of the Greeks. It was no sooner known that the straits of Thermopylae had been forced, than the priests consulted the God, as to whether they should bury the treasures of the temple, so to secure them against the sacrilege of the invader. The answer of the oracle was: "Let nothing be moved; the God is sufficient for the protection of his rights." The inhabitants therefore of the neighbourhood withdrew: only sixty men and the priest remained. The Persians in the mean time approached. Previously to this however, the sacred arms which were placed in the temple, were seen to be moved by invisible hands, and deposited on the declivity which was on the outside of the building. The invaders no sooner shewed themselves, than a miraculous storm of thunder and lightning rebounded and flashed among the multiplied hills which surrounded the sacred area, and struck terror into all hearts. Two vast fragments were detached from the top of mount Parnassus, and crushed hundreds in their fall. A voice of warlike acclamation issued from within the walls. Dismay seized the Persian troops. The Delphians then, rushing from their caverns, and descending from the summits, attacked them with great slaughter. Two persons, exceeding all human stature, and that were said to be the demigods whose fanes were erected near the temple of Apollo, joined in the pursuit, and extended the slaughter. [94] It has been said that the situation of the place was particularly adapted to this mode of defence. Surrounded and almost overhung with lofty mountain-summits, the area of the city was inclosed within crags and precipices. No way led to it but through defiles, narrow and steep, shadowed with wood, and commanded at every step by fastnesses from above. In such a position artificial fires and explosion might imitate a thunder storm. Great pains had been taken, to represent the place as altogether abandoned; and therefore the detachment of rocks from the top of mount Parnassus, though effected by human hands, might appear altogether supernatural.