Yellowstone National Park back country campsite 9C1 is a nice perfectly flat campsite near the Bechler River in SW Yellowstone National Park.  The site is slightly visible from the main trail once you are set up for the evening, but this is the Yellowstone wilderness so you will not likely see anyone else in the evening on the trail.  Site has a food area with a fire ring and pole to hang your food back.  Plenty of flat ground all around to set up your tent.  Mosquitos are present but they seemed more tame in camp versus the backpack in to the site.   Water can be filter from the Bechler River about a minute away from the campsite.  This site has a luxury in the back country....A TOILET!  Just follow the sign from the cooking area to the toilet.  Be warned however, their are no walls, just a seat in the woods, and you can make out the tents from your location, so be sure to let others know before you head out to the "toilet".