Custer State Park is one of America's largest state parks. There are 71,000 plus acres of prarie fields, serene lakes and rugged granite mountains. You should be able to see plenty of wildlife. There is elk, antelope, moutain goats and sheep, deer and 1,500 head of bufallo. We got some pictures of some of these. You drive through windy roads and through small tunnels, several of which are only good for one car at a time . We had to honk to let people at the other end know we wanted to come through. Motorhomes have a different way to get into the camping areas in the Park. We just drove through the area. Plan to try to come back to do some hiking later this week.