help with map lighting...

[nemecj05]

ok, im making an artic map and i need to know how to make it look kinda dark like it would in the artic with fog......please help me thanx

 

[Optional]

Use the LIGHT_ENVIROMENT, go to its properties and go to the Color option. Change it to white. Go into the Yaw settings. Set the first number to maybe, -50. You can use the Fog entity (Point entity). Leave the color as white for the Fog (obiviously).