lo Wyoming for Mount Rushmore, from there

I would travel along I-90 from Deadwood and stop at Gillette has a Donkey Creek Festival with music June 21&22. Lots to do in Gillette. Bighorn National Forest. There are lots of recreational activities there, horseback riding, camping, boating etc. It's also considered to be a sacred space. Much to see and do there. I would stay in Lodge Grass on I-90. From there I would tour all the Crow Nation Historical Sites and Battlefields. Many tours within 20 minutes from there.