Badlands National Park is our 13th national park to visit in just over two years. It bears similarities to many other parks, most notably the ones in Utah, but it is definitely an entity all its own.
The main loop road through the park is 26 miles of paved road with dozens of pullover vista lookouts and a surprising amount of wildlife, as you can see from the pictures below. Despite being over 1200 miles from the bulk of the western fires, there was a haze over much of the park that dulled pictures, particularly taken at any distance. But the wildlife scenes were thrilling and the rock formations interesting and at times spectacular. Counting the many stops you will want to take for pictures, you can see almost the entire park in under 3 hours.
A word of warning: the first side road we took was a dirt road that was the roughest, most washboard-y park road I have ever encountered. Our rig was so jostled that it worked one of our air pressure sensors loose on a rear tire, causing us to lose about 20 pounds of air pressure before we heard it hissing. It may be borderline acceptable for a car, but for a small RV it was not.
A small herd of bison greeted us as the entrance. We were so busy with traffic and details of entry that it was difficult to get a good picture, but these two posed nicely for us. 
This is typical of vistas throughout the park. The stratified rock is beautiful. 
We saw mountain sheep on four occasions. This is about half of the largest group. 
And then there was this lonely outcast. 
Collared and with two broken horns, he looked pretty forlorn. 
Then there was Wile E. Coyote, with the lean and hungry look. He loped alongside the road, oblivious to the traffic. I took this as he passed by the RV. It is as close as I have been to a coyote in the wild. 
Layer upon layer of multicolored rock. You can see why French trappers called them “bad lands to cross.” 
And finally, the obligatory RV travel commercial…