Black Poison Marsh is an extremely vast, black swamp and a black deathly miasma is above it. The deathly miasma at this place is exceptionally strong. If anyone dares to charge into it, they would not be able to last for long even if they were at the Spiritual Rotation Stage strength.
In the black swamp, a faint poisonous gas emerges whenever the bubbles explode. From time to time, black mud would roll down. Under the black mud, scarlet and vicious eyes would emerge and slowly sweep around the surroundings.