I noticed this weird semi transparent polygon type thing that is only visible from below. I think it is something to do with the terrain as is moves with the terrain. I'm not really sure what it is or how to remove/fix it. If i hide the terrain it still remains. I have moved all the static object in the area and it doesn't move. I have toggled all the visibility layres on and off in every category in the world editor and nothing makes it go away. As it moves up and down when i move the terrain up and down I'm thinking its terrain related. When it is viewed from below it seems that shadows are not rendered on the things viewed through it. Thankfully you cannot collide with it. There should be a webm video attached showing the problem.