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Mammoth Cave National Park is a world-renowned American treasure. Simply put, this is the largest, longest known cave in the world, with more than twenty-four openings and 365 miles of mapped passageways, and many more miles yet to be discovered. It is a place where darkness rules and time moves at the pace of the water slowly dissolving its limestone walls, creating more passageways to be discovered by future genereations. It is a place of large rooms, high domes, tight passages, long avenues, and strange formations; a place where occasional waterfalls, lakes, and rivers flow beneath a verdant cover of south-central Kentucky woodland.