WHen I discovered the sky box for Freefall, I was amazed and totally got the premise but it took a while to go duh.... 2+2=...... Oh... skyboxinfo. I recall asking around at the time. The few responses I got were 'haha... lol...good one!' . Someone did say "skybox" And I was like, "yea. No ****! But how does it work?" So just to basically address your question (GR)Killer, in case you have not sussed it or looked it up in the wiki, is that the small skybox is setup with a skyboxinfo like a zoneinfo in the main map (actor>info>zoneinfo>skyboxinfo) for terrain . In fact you can setup the skybox with terrain and fog as well.