Skybox Issues

[HwitVlf]

That "horizon haze" is not adjusted by the fog setting, but is a texture drawn on the sky-dome model. They are the sky##_2.bmps in DATA\MAP\MODEL. If you want it to go away, you can replace it with a solid black, but I don't think that will help what you're seeing in the screenshot. ‎  I think you need to increase your draw distance (Map Setting > Draw Distance). You can also customize the sky-dome's main texture by replacing sky##_1.bmp to make it match your ground better.

With outdoor maps, I think it works best to turn fog on and add some clutter to break up the horizon.