Mist
From Xsyon Wiki
Description
The Green Mist is a poisonous, radioactive substance which surrounds Lake Tahoe. You cannot survive even a minute of these toxic fumes. The mist causes creatures that wander too close to mutate into hideous, dangerous abominations. Avoid the mist at all costs! Below is an image taken from the edge of where the mist begins. Many believe that some day the edges of the mist will begin to roll back, revealing more untouched land to explore and exploit.
