Castle Mound was a great state forest campground. All sites are drive-in, and well spaced with ample woods in the summer. Some sites are kind of small, and finding root and stone-free areas for more than one tent might be a challenge. Bathrooms are clean and seem to be recently renovated. The campground is not too far from freeway, which didn’t pose a huge problem, but those sensitive may be bothered by noise. Woods are gorgeous with nice trails. Black River Falls is a very short drive from the campground as well.