The following text belongs to Herodotus' book 8 (Urania)
http://classics.mit.edu/Herodotus/history.html
QUOTE
Meanwhile the enemy pressed forward briskly, and had reached the shrine of Minerva Pronaia, when they were overtaken by other prodigies still more wonderful than the first. Truly it was marvel enough, when warlike harness was seen lying outside the temple, removed there by no power but its own; what followed, however, exceeded in strangeness all prodigies that had ever before been seen. The barbarians had just reached in their advance the chapel of Minerva Pronaia, when a storm of thunder burst suddenly over their heads- at the same time two crags split off from Mount Parnassus, and rolled down upon them with a loud noise, crushing vast numbers beneath their weight- while from the temple of Minerva there went up the war-cry and the shout of victory