This state park is well worth spending time in. It has three main drives that are definitely worth your time. We drove their Wildlife Loop several times. Also take some time to drive one or more of the gravel roads that branch off of the Wildlife Loop. They are kept in excellent condition and get you closer to wildlife! Needles Highway took us through very narrow tunnels and the granite spires to Sylvan Lake, and the Iron Mountain Highway leads you to Mount Rushmore. You will find that I have included a lot of Prairie Dog shots, but most include babies and they are really cute! A lot of cute shots of baby Bison as well!