The Big Horns are located between Ten Sleep on the west and Buffalo on the east. Ten sleep isn't much more than a wide spot in the road but there is an RV park. Buffalo has at least three nice parks and there are a couple private RV parks in the Big Horns and several forest service camp grounds. I can get you some names if you need them and I'll be going over the mountain in April so if you want me to scope out anything for you let me know.