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meerab
08-06-2007, 10:54 AM
Mammoth Cave, a limestone cavern in central Kentucky, is the longest cave system in the world. There are 345 miles of irregular subterranean passageways at various levels, plus underground lakes and rivers.

am_alive
08-06-2007, 11:51 AM
Nice info

chugh
08-06-2007, 12:49 PM
THJNX FOR D INFO

coolestnapster
08-07-2007, 12:07 AM
nice one...