1880’s Town, Exit 170 in South Dakota
Wall Drug in Wall SD, worth a stop for a little while. Exit 110
Exit I-90 at Exit 131 and a short detour through Badlands NP is a nice scenic drive, rejoining I-90 at the town of Wall
Devils Tower. Exit 185 in Wyoming and a little North. Great dry NPS campground. A good near 1 mile walk around the base of the tower. Grandkids will enjoy the prairie dog town. Avoid the vastly overpriced KOA just outside the Natl Monument.
Just before you get to Gillette, WY have the kids watch out the right side to see a working strip coal mine. They can actually see the vein of coal.
We found Missoula, MT a nice interesting town. Jim & Mary’s RV was nice and reasonably priced.