Castle Mound campground in Black River State Forest, Wisconsin, offers 60 first-come, first-serve camping sites, including 22 with electrical hookups. The campground is surrounded by beautiful views of the forest and bluffs. Nearby activities include hiking, fishing, and swimming in nearby lakes and rivers. Amenities at the campground include flush toilets, showers, drinking water, and a dump station. The best time of year to visit is from May to October, with average temperatures ranging from 50-80°F.