Overview Click See More at the bottom of this overview and review the "Need to Know" section of the campground.At Maple Springs, visitors can enjoy the serenity of the campground and surrounding backcountry trails, or spend their days exploring Mammoth Cave. Campers can explore up to ten miles of the cave through a variety of tours available at the Visitor Center. With more than 400 miles (644 km) of mapped passageways, Mammoth Cave ranks as the world's longest known cave system. Mammoth Cave is