help with environment

[Percules]

I'm making a map that's essentially a giant building that goes to the clouds, the problem is that you can see the ground and where the map ends from the top, how can i make it so that you cannot see the bottom? (note you can fall and die if you fall off)

 

[Xjaoneks]

Im not a experienced mapper (i started few days ago) but i think the fog can fix your problem. Here is some quick tutorial that should work

 

[nesman]

Pretty much fog and 3d skybox. That video Xja linked is a good start.