I sent Toho an email and I am waiting for a response back. But to those who don't know about this film; it was made back in 1974 and it dealt with global warming and use of nuclear weapons and it's about a scientist who warns that if we keep it up that we are going to cause our own extinction. Now, the film cause controversy in Japan, mainly after what is shown in the aftermath when we've used all of the nuclear weapons. Man is pretty much de-volved and mutated. I have taken a screen cap from my VHS to DVDR transfer because I value my VHS's safety because it's hard as hell to find.
Now this still you see right here was 1 frame out 24 in the second that was hidden in the print. You see the mutated person and then another walks into frame. One of them sees a snake and it runs to it. The other runs after him and they start fighting. The frame below flashes fast but it cuts to the next scene so it's really edited because one of the mutants beat the other and ate the snake.