I didn't make it!
Make your own shader.
Open up fogs.shader in wordpad, take a look at what's what and create your own.
Edit: On quick glance, i'm guessing the last part of the last line: fogparms ( 0 0 0 0 ) 0000, is view distance. Try experimenting with that number...
[COLOR=Navy]Yeah, you can try to make a new, or edit one too ;) But I think, that's good too, if you put this fog, and make negative lights on it's bottom. With this, maybe you won't see it's bottom. Or watch t3_rift, how did they do it ;)[/COLOR]