>>2403309The region between Guymon and Boise City is one of the darkest places in the nation, so you can photograph the Milky Way if you're there after the moon has gone down.
The Ouachita National Forest is plagued with black bears IME, but luckily they are easy to spook off.
If you don't like the color green, southeast Oklahoma has some pretty prairies and the Black Kettle National Grasslands are like a colder version of Amarillo.
If you like urban exploration, we have a Superfund site called Picher, OK that feels really spooky to camp in.