Where is the world’s largest cave system located?
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The world’s largest cave system is the Mammoth Cave system, located in Kentucky, USA. It stretches over 665 kilometers (413 miles) of explored passageways, making it the longest cave system on Earth. Mammoth Cave is known for its vast chambers, complex underground passages, and unique geological formations. The cave system is a UNESCO World Heritage site and attracts thousands of visitors each year for spelunking and tours, though much of it remains uncharted.