In this VFX plate there are crew, people and smoke everywhere there shouldn't be. On the right there is what looks like a basecamp, on the left it was a little too smokey and you can see the crew spreading out the smoke. At the back there are even more crew trying to blend in with the trees.
As you can see the crew smoke and BG crew have all be erased via some pretty tricky roto and projections. This was a very difficult shot due to the vast parallax and movement thanks to the hand held camera on a Movi Rig.