Horizon Shift..

Whew! Looks great!

How was it done? Is this without moving the camera at all on the second exposure? It is effective. There's an indefinable danger here. It's a bit like a threatening sandstorm on a road where such things shouldn't exist but it isn't just a simple storm. To that extent it is supernatural but if you were there then the danger would be real rather than spooky. You are enveloped by the danger.