The Black Beast Forest of Huai Mountain Pass.
It was less a forest and more a sea of trees.
This sea of trees stretched for dozens of miles, and even contained terrain like valleys.
Legend had it that this sea of trees was the battlefield where Human Race Cultivators fought the "Poison God" during a great war in ancient times.
After the Poison God's death, its residual Spiritual Power contaminated the area, even altering the local Laws to form a natural no-fly Array. Any physical being was incapable of flight within it.
According to legend, when it first formed, the poisonous miasma of Black Beast Forest was so potent that not even Cultivators of the Upper Five Realms could pass through.
Although the poisonous miasma had thinned over the ages, Cultivators below the Dragon Gate Realm still couldn't get through. The Law that forbade flight, however, remained in effect for everyone, regardless of their Realm.
