The Khraal Rain Forest
According to the Book:
The Khraal rain forest fills the eastern spur of Darguun. Within its dense depths, all manner of strange and dangerous creatures roam. An extensive series of ruins, believed to be from the time of the Dhakaani Empire, lies deep within the vibrant jungle. A few towns and villages can be found along the edge of the great jungle, but not even the most powerful hobgoblins or bugbears have been brave enough to try to forge settlements within this dangerous environment.
Type
Forest, Jungle (Tropical)