There's a little bit of everything available up there. Plenty of muck, thats for sure.
But stay off the tundra up north... a couple AF guys learned that lesson the hard way a few years back... had to go in a few months later once everything had frozen over and dig their rigs out and drag them out. (Helo lift was one of the options considered)... They decided that the rules about not driving off the road to hunt in that area didn't apply once you had successfully shot your caribou... learned that one the hard way...
Whatever you do...have plenty of spare parts...and company. You'll see lots of old rigs out in some unusual places...