This camp is surrounded by inaccessible territory from three sides, of which two very tightly.
Once there, you need to move Eeast-Southeast toward the road and follow it Southwest. The road will slowly bend Southeast, and an exit right will lead to the tunnel between Red Peaks and Rocky Ridge. Not taking the exit will lead to the Ghost Town, where you can turn right at the broken tree, to follow to the highway without taking any exits.
You can also activate all interface elements in settings and let the map's gps lead you out. That will work especially if you are already lost out there somewhere. When you enter the photo-mode, what are the three coordinates the game shows in the upper portion of the screen?
There's some chance this is genuinely a bug Try the steps above, `kay?