Volvagia

Volvagia was an ancient Dragon that lived in the depths of Death Mountain and was essentially the spirit of the Mountain. It was said that a legendary Goron destroyed it with the use of the Megaton Hammer. By the time of Ocarina of Time, Ganondorf revived the Dragon to secure the Fire Temple from intrusion. He also fed Gorons to Volvagia to make an example to other races that might revolt against him. Incited by Darunia's son, Link sets out to destroy Volvagia to stop the Dragon from escaping the temple and turning Hyrule into a burning wasteland.