Ever see Deliverance?
All the campgrounds in Mammoth are well maintained , that being said Houchins Ferry gives you the isolated feel that some people like. The ferry is closed so no through traffic. The locals, from the Brownsville area, use this campground a lot it would appear. I've no doubt the Rangers make their rounds but you are on the far side of the river about 15 miles from the main complex. Close to Brownsville (maybe 3 miles?) no RV sites, pavilion , picnic area, fishing and boat ramp