We built this city on rock, more specifically limestone. This area was built on a magnificent cave system. Mammoth Cave National Park draws thousands of visitors each year. In addition to caves, we also have hiking and biking trails, several bodies of water suitable for canoeing and kayaking, a train museum, the National Corvette Museum, Lost River Cave and many other attractions. Share your photos of your favorite staycation so that we can share them on the air. Be sure to tell us where you were when the photo was taken, the names of everyone in the photos and your contact information.