World of Warcraft: Emerald Breach
Eons ago at what is now know as Khaz'Algar, the veil between the Dream and our world was weakened by Aman'Thul ripping out Elun'Ahir from the world.
When Fyrakk sliced open a path between our world and the Emerald Dream, it caused the Dream to become unstable, cracking at the seams and leaking into our world.
Old wounds are reopened and a part of the Emerald Dream bursts into Azeroth at Khaz Algar, creating a new landmass that is a twisted mix of what is there now, what was once there before the Sundering, and the untouched, wild nature of the Dream.
Zones include:
-Bottom of the ocean forced up to the surface and now kept alive by the power of the Dream, giant corals, sharp cliffs, ancient shipwrecks, outerworldly
-A massive jungle with impossible, winding tree shapes
-An ancient underground cavern now cracked open and exposed to the sun, with the roots of Elun'Ahir starting to grow once again