The Shimmering Expanse is a subzone of Vash'jir. It contains The Earthen Ring quartermaster in Silver Tide Hollow, the only flight points in the zone, and tons of Azshara's Veil. In this section, players learn about the highborne's past and the threat of the naga through the eyes of Battlemaidens.

Poseidus, who drops Reins of Poseidus, is mostly likely to spawn in this subzone too.