Handicap yes, Accessible ?
If you are traveling in July without reservations don't worry there is always Makoshika, MT state park. Dry camping in Makoshika MT state park - doesn't mean you can't bring in a beer or two...it means absolutely no water is available at the campsites. The place was beautiful, it looked like we were at the South Dakota Badlands, lots of hiking, rattle snake warnings, very little shade, lots of wind at night and Handicap Pit Toilets, but not necessarily Handicap Accessible Pit Toilets.