Mammoth Cave National Park is about 85 miles south of Louisville, Kentucky. It is also about 85 miles north of Nashville, Tennessee. Park visitors can spot white-tailed deer and flocks of wild turkey. They can see chipmunks, raccoons, and squirrels along the many miles of marked trails. Beneath the ridges of the park lies its main attraction, the most extensive cave system on Earth. Erosional forces formed the caves system. At least 10 miles of Mammoth Cave were explored by aboriginal peoples 4,000 years ago. However, exploration of the cave cease about 2,000 years ago. It did not begin again until the cave was rediscovered in 1798. Mammoth Cave now boasts 350 miles of surveyed passageways. It is three times longer than any known
