Just... Too aggressive fog.
Tint it darker and fade it a little bit out.
It's missing a sky, aswell!
Try Foggy Style, or pick a model with sky. (Game Interface is the place for them)
If you go along with a model sky, you will need good experience with object editor, to find the correct ones.
You can ask me for some paths, if you wish to.
PS: Moonlight's may not be a good idea in this terrain, but we'll see if you can make them fit. =)
PSS: Since when there were roots/vines in acidic water?