The Revolt of the Titans
The Titans, with the exception of Oceanus, were jealous of the new gods and wished to reconquer the kingdom of which they had been dispossessed. Then the terrible struggle began. From their stronghold on Mount Othrys the Titans launched furious attacks upon Olympus. For ten years the outcome of the war remained doubtful. Zeus descended into Tartarus where, guarded by the monster Campe, the Hecatoncheires and the Cyclopes were kept prisoners. He set them free and made them his allies.
The Cyclopes gave him the thunderbolt and the Hecatoncheires put their invincible arms at his service. Seizing in their enormous arms great boulders, they crushed the Titans. 'Sea and earth resounded with the horrifying clamour and the shaken firmament groaned aloud.' Zeus, too, was unable to curb his warlike rage and joined in the fray.
From the heights of Olympus, Hesiod tells us, from the heights of the heavens he hurled thunder and lightning. With unwearying hand he flung bolt after bolt, and the air was rent with sound and fury.
The fertile earth shuddered and burned; vast forests flamed and all things melted and boiled: the River Ocean, the immense sea and the entire earth. Around the infernal Titans arose stifling mists and blazing air; their bold glances were blinded by flashes of lightning. The fire even reached Chaos, and from what the eye could behold and the ear distinguish one would have said that sky and earth were confounded, the earth shaken on its very foundations, the sky crashing down from its heights. Such was the mighty uproar of this battle among the gods'
In spite of their pride and courage the Titans were finally defeated and, bound with chains, cast into the abysmal depths of the earth as far below its surface as is the earth itself from the sky.