The Gigantomachy was the battle between the Gigantes (Giants), children of Gaia, and the Olympians, who had recently defeated the Titans in the Titanomachy. The Gigantomachy resulted in the death of many giants as well as the imprisonment of several well-known ones under volcanoes. Either Phoebe or Theia prophesised the war could only be won when the son of a mortal woman fights. Thus the gods summoned Heracles, a demigod son of Zeus and Alcmene, to fight for them. The war symbolized the defeat of the old order by the new. When the war was ended, the Olympians resumed total domination of the pantheon and Typhon was imprisoned under Mt Etna, whilst his brother Enceladus, was imprisoned under Vesuvius.