What is the world's longest cave system?

Brainyblonde

Mammoth Cave near Cave City, Kentucky, is the world's longest cave. More than 350miles (563 km) of passages have been mapped. Not only is the cave the longest in the world, but cave mappers believe the cave system will eventually prove to be 560 miles (900 km) long. http://www.uky.edu/KGS/education/mammothcave.html Mar 28 04, 12:10 PM

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