mammoth cave national park n a national park in Kentucky having a large cavern and an underground river Synonym(s) Mammoth Cave National Park
News & Articles mammoth cave national park Trips for Science Geeks 2Yellowstone National Park, Wyo. 3American Museum of Natural History, New York, N.Y. 4Mammoth Cave National Park, Ky. 5Thomas Edison National Historic Park, West Orange, N.J. June 22, 2013 - Fox News