The Goron Mines are found within Death Mountain. Darbus, the leader of the Gorons, had been locked away there after he had been transofrmed into a monster by a dark power. The three Goron elders in the mine each held a piece of the key that would unlock the room where Darbus was held. Also held within the Goron Mines is the Hero's Bow, which is guarded by a very large Goron.
Throughout the mines there are large magnets and a magnetic mineral, which it is possible to walk on by using iron boots.