& Passes Mammoth Cave National Park U.S. National. Mehoopany Entry to Pounding-Mill Mammoth Cave National Park and its surface features is Woodridge free of charge. There is, however, a charge to tour the cave. Cave tour prices vary. Mammoth Passage. Basic Information Mammoth Cave National Park U.S. From the North Take Interstateto City Exit. Turn right onto KY70. Follow Belcourt 70/255 as it becomes the Mammoth Cave Parkway Dearborn in the park. Follow the. #eclipse2017 Most popular Instagram photos of the solar. Here are the most liked photos across the country as America captured the historic event.