I hiked an abandon train shed today that runs along Donner pass (the Donner Party). I got about 5 good shots..this is one of my favs. This shot is completely unmanipulated..check out how the light reflects green and blue.
Very cool shot. For a split second I thought the roof was scattered clouds lit by a green moon. Also the face on the wall adds to the whole mood, one can come up with many scenarios.