What is the longest known cave system in the world?



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    The longest cave in the world is Mammoth Cave, located near Cave City, Kentucky.  It is known to be 367 miles long, but it is not yet completely mapped out.  Cave mappers believe in total the entire cave system is about 560 miles long!  It isl already almost 3 times the lenght of the second longest cave system which is located in the Ukraine.  The cave system was formed as a result of changes in the Ohio River during the Teriary and Quaternary periods.  Kentucky is home to many of the worlds longest cave systems.

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