The Shrine of Eldretharr is the final area within Dire Maul East. It is a large open-air temple containing numerous ancients and lashers. Its most notable occupant, however, is Alzzin the Wildshaper, Dire Maul East's last boss.
To access this area, one has to get Old Ironbark to break down the door in the Conservatory. After Alzzin has been defeated, there is a direct tunnel access leading back out to the Broken Commons.