Day 3 - stopped by the SPAM museum today, and wouldn't you know it, Monday is the only day of the week that they're not open. 'DOH! But the gift shop was open, so I squished a penny and moved on. Took a side trip to Pipstone National Monument to see where Native Americans have been quarrying stone for sacred pipes and other items for centuries. Drove nearly the entire width of South Dakota today, arriving at my campsite just south of the Badlands after dark. Driving in through the Badlands and being the only car on the road with no street lights, the full Milky Way overhead, and my headlights illuminating ghostly towers of sculpted sand and rock was an other worldly experience. 561 miles, 11.5 hours on the road. Total distance from Arlington, VA to Interior, SD, 1,804 miles!