The Wild River Wilderness is a relatively newly designated tract of land. The established campsites within the wilderness area were once shelters, all of which were dismantled and removed after the Wilderness designation. So the site is impacted but still quite pristine. There is a fair amount of Forest Service signage as you enter the campsite area and we were even visited by a backcountry ranger.
There are several tent sites with cribbing, most of which appear to potentially flood in heavy rains so be thoughtful when selecting your site. We had the place to ourselves so the options were plentiful. Just watch your step and where you set your things down, as there are a number of beautiful Lady Slipper plants in the area. Bears are an issue so be sure to hang your food and toiletries. There is a perfect bear hang tree near the fire pit so as long as no one is camped right in that area, it's an easy toss with some para-chord.
There is a cool slab waterfall a short down hill walk from the campsite. There are a few social trails leading down to it. We enjoyed hanging out and cooling off in the cold water. There is a large established fire ring with some log benches that creates a nice little spot to hang out and eat. We decided to do a little day hike up to a view point once we got ourselves set up for the evening. It's about a half mile or so toward Rim Junction and the trail pops out on a little rocky ledge that looks down toward the Basin Campground and the Caribou Speckled Wilderness area. It was a great (and bug free, thanks to the breeze) spot to hang out for a little bit.
There are several campsites available here and it's rather spread out. Be sure to have the appropriate gear to dispose of human waste properly. It can get a little gross around the campsite in the heart of the busy summer season, just FYI. We were here in June of 2020 and due to COVID-19 and the timing, it was evident that this site hadn't seen much use this season as of yet. By the fall, this site can be full of mice so just be aware that timing can make all the difference.