MAMMOTH CAVE NATIONAL PARK - KENTUCKY USA COFFEE MUG
With more than 400 miles of passageways explored, Mammoth Cave is the world's longest known cave system. Subterranean wildlife includes eight bat species, Kentucky cave shrimp, Northern cavefish, and cave salamanders. Above ground, the park provides recreation on the Green River, 70 miles of hiking trails, and plenty of sinkholes and springs.
$15.50
