This is my impression from the Rage's song of the same name. On the one hand, this may be a vision saw by the dying man... the last thing in his life - bare trees and a piece of the sky. This is the beginning of his journey to the Neverland. On the other hand, it's late autumn, beginning of long cold winter... But after all there going to be spring one day... '.. and from the ashes we'll be up again..' as Rage sings.