The Dread Expanse is the realm created by the Sha of Fear and a subzone of the Terrace of Endless Spring. It is described as a "watery wasteland" and is a near endless ocean cloaked by fog and the starry nighttime sky, with occasional thunder. The only inhabitants are the Sha of Fear and his Dread Spawn servants.
The area is only seen when fighting the Sha of Fear on heroic mode. When players defeat the Sha, a glowing light appears in the center of the area to transport players back to the terrace, players may also use the same light to come back to the wasteland.