Just curious what a naturally occurring unstable area might do? Crumbly cliffs? Quicksand?
The badlands look pretty interesting. Although I grew up in MN I never saw NDAK till I crossed it in May of 2005 being chased by a snow storm.
I was unprepared for so much treeless EMPTY. I definitely didn't expect high desert through Montana, Idaho and much of Oregon. Guess I'm a tree hugger too long to adapt to flat & empty.
I did take one picture in NDAK. It was at a rest stop.