Crystal Lake Emerald Green Mammoth Cave National Park Kentucky

Crystal Lake Emerald Green Mammoth Cave National Park Kentucky

•  national park in central Kentucky, encompassing portions of Mammoth Cave, the longest cave system known in the world
• Since the 1972 unification of Mammoth Cave with the even-longer system under Flint Ridge to the north, the official name of the system has been the Mammoth–Flint Ridge Cave System
•  52,830 acres 
•  The Green River runs through the park
• They explored about 20 miles into the cave. * The cave’s Mammoth Dome is 192 feet high and the Bottomless Pit is 105 feet deep
• Fluted Stalactites  – pipe organ appearance
• Worlds Longest Surveyed Cave
• world’s longest known cave system with more than 400 miles
• During the War of 1812, black slaves mined saltpeter from cave sediments for use in manufacturing gunpowder