This location is not a campground, it is the trail head for Humbug Spires and wonderful 6 mile one way hiking trail.  The trail head is small with not much room for vehicles.  While their is a vault toilet at the location, this area is not a campground.  Trail is well worth hiking

If you were getting ready to hike in from this trailhead the next morning it might be an okay place to sleep in your truck - or warily in your tent because there could be traffic. No picknic table or fire ring and maybe only one flat spot in the dense grass right by the river. It gets a lot colder in a riparian area at night. Decided to go to Big Hole campground instead.