I arrived in Sheridan, Wyoming after the campground office closed, but before everyone had gone to bed. I ended up having beers with a family who had just come from Mt. Rushmore. They gave me a tip on a lesser-known campground, since the KOA had been booked when I tried to reserve there. I left early the next day, and crammed in a bunch of sight-seeing:

• Devil's Tower
• Random western town of Hulett, WY
• Spearfish Canyon scenic drive
• Black Hills National Forest
• Deadwood
• Sturgis
• Mt Rushmore evening lighting ceremony