Go deeper into the history of each park with scholarly articles and essays from Oxford University Press, freely available for the centennial year.
The largest known cave system in the world is that under the Mammoth Cave National Park, Kentucky. It consists of many chambers with connecting passages said to total 500 miles (500km). Rivers, streams and lakes add to the majesty and scenic variety of this vast limestone cave. In 1972 a passage was discovered linking the Mammoth Cave with the Flint Ridge Cave System.