This quest is not available in game.
Gather the Burning Key, the Cresting Key and the Thundering Key from the Stone of West Binding, the Stone of East Binding and the Stone of Outer Binding.
Bring them to the Stone of Inner Binding.
Four Stones of Binding are scattered throughout Arathi. These stones keep me pinned beneath the earth.
To unlock them you must unlock the strongest: the Stone of Inner Binding. And to do that, you must gather keys from the other three.
These stones are watched by guardians, but if you are clever, or lucky, you may find ways to banish them.