This place was once used to imprison the Divine Root, so naturally, the area is quite expansive.
The wall structure is not made of stone, but, like the Tower of Dominion, is entirely crystal.
The only exception is the ground, which is covered with a layer of black soil of unknown thickness, carrying a strong rotting smell.
For ordinary people, this smell would be a bit too foul, but to the Dark Treants, it seemed like a treasured delicacy.
The more intelligent Dark Treants behaved more reservedly, merely extending some feeder roots from under their feet to take root in the black soil.
The less intelligent Vine Fiends weren't so courteous, shaking their bodies and going directly into a rooting state.