Deepholm is one of the four regions of the Elemental Plane. It serves as both home and prison for the earth elementals, ruled by Therazane the Stonemother.
Her faction is similar to The Sons of Hodir - players will need to unlock the pool of (daily) quests. Besides Therazane and her elementals, the Earthen Ring has also made Deepholm its temporary home. Stationed in the Temple of Earth they are attempting to mend the wound Deathwing opened.