A few years ago I read an article by a guy who'd spent his life outfitting in all of the mountain states. He listed Idaho as being the roughest. His reasoning was that while Idaho isn't the highest (high point 12,660'), the valleys are the deepest and the slopes the steepest. When you get on top in many states, you can stay up there. In much of Idaho, it's constant up and down and it's a long way up or down.
That's his opinion. I know it's steep and rough here but I have no basis for comparison.
