Hi Chris, that's a fantastic location for photography... I can only imagine how many really interesting shots you could capture at different times of the day. Sunrise/sunset down there could be spectacular!
I think you've captured the essence of the theme perfectly for me - the world is indeed living, moving, cracking etc. A real effort to get to the place to be able to take that shot, so extra marks for that
The image also looks very natural - as if you haven't processed it too heavily, which is a bonus. I guess you could lift the shadows to get a bit more detail inside that crack, but it's a great image as is.