This is a huge state park! It has three scenic roadways.
The Wildlife loop, 18 miles of road in which you will probably see bison and burros (you may feed the burros, so bring some carrots/apples...). This park is home to some 1,300 bison. Each fall they host the Buffalo Roundup, where you can see buffalo thunder across the grasslands as park staff and local cowboys round up the herd in order to sort, vaccinate and sell. Other wildlife seen on this loop is pronghorn antelope and prairie dogs.
Iron Mountain road takes you through wonderful scenery and tunnels that frame Mount Rushmore. Be sure to start at the south end so you are able to see Mr. Rushmore framed beautifully in the tunnel! Worth the drive!
Needles highway (14 miles) takes you to towering granite spires and Needle’s eye. Wonderful drive!
Custer Park also offers gold panning. See Gold