There's a lot of wildlife in Badlands National Park, but we saw the bulk of it right in Sage Creek Campground. This is a totally free campground, which is basically a field surrounding a prairie dog town, with two pit toilets and no water. There is also no shade, but there are a few picnic tables under sun shelters in the campground.

Unfortunately, we didn't score a sun shelter because we arrived late in the day. We did have a tarp that we set up over our picnic table for shade. During our stay in July, we saw several bison in the campground, as well as hawks, meadowlarks, magpies, bighorn sheep, prairie dogs, and a family of burrowing owls. 

There are trails that lead up to the surrounding hills, and plenty of wide-open spaces to explore. If the campground gets busy, it does feel a bit like the grounds of a festival, as there is no privacy and people tend to pitch their tents wherever there is room. Also, it took us about an hour to drive back and forth from the visitor center, and the road is extremely rough, so you have to drive really slow. 

We loved Sage Creek Campground - the remoteness, the wildlife, and the amazing sky, and would definitely return! Sites do fill up in the busy summer season, but not until late in the evening.