Mammoth Cave National Park
/ˈmæməθ/- a national park in west central Kentucky, site of the largest known cave system in the world. It consists of over 480 km (300 miles) of charted passageways and contains some spectacular rock formations.马默斯洞穴国家公园（位于美国肯塔基州中西部, 是世界最大的洞穴群; 该公园已标明的洞穴路线有480公里, 即300英里, 内有极壮观的岩石构成）。