Hill City SD to Devils Tower, WY

Agree on Belle Fourche Campground. It is within the boundary of the Monument and is extremely well kept. Many other National Park Campgrounds leave a lot to be desired, but this one is nice, good spacing between sites, shade, nice pea-gravel pull throughs, and a very cheap price. Most people don't stay at Devil's Tower more than a few days as it is a small park/monument. So most folks can do without hookups for that amount of time.