Bong State Recreation Area Loop Professional Review and Guide
"Hiking around Wolf Lake, the centerpiece of Bong State Recreation Area, offers a pleasantly varied experience. The terrain on one side of the lake is flat or lightly rolling tree-speckled prairie, while the other side gives you dense woods, steep hills, and plunging ravines.
Facilities include a campground, picnic areas, a beach, boat launch, and a visitor center. Pick up a park map from the entrance station. Hiking is not allowed on this trail when there is enough snow on the ground for cross-country skiing."