Thought this might be of interest here, given Utah's representation on the list.

It's fun to try to guess the park from the picture without looking at the name. I got 10 out of 20, but some were really just dumb luck.

http://www.wired.com/wiredscience/2011/08/national-parks-from-space/?u_&pid=1998

13/20.

Yeah, the Teton one is CG.

16/20 for me.

I won't say what the four were since I don't want to give anything away, but it was #2, #12, #16 and #20. After seeing the answer, I really should have gotten #12 and #16. #20 was harder because I thought there would be more ice. I thought the white stuff in #2 was snow/ice, so I really blew that one.

The sad thing for me is that I have been in three of the ones I got wrong. And not just driving through....I mean extensive time spent. I guess I wasn't paying enough attention when I was visiting or something.