Berlin-Ichthyosaur Campground is near the ghost town of Berlin, a well-preserved mining town.
Spend some time exploring the town (many original buildings remain), and stop by the old cemetery. After wandering around town leave the ghosts behind, and head back to camp where you can make use of the picnic area and barbeque grills.
Make sure to talk with the rangers, and take a tour of the Diana Mine, and a tour of the ichthyosaur dig (it's in a closed building, and is only accessed via a tour). The ranger lives on site. There are other ghost towns nearby. Fuel is scarce; fill up.