WELCOME TO CARLSBAD CAVERNS
'(<a href="http://www.j-archive.com/media/2008-03-04_DJ_23.jpg" target="_blank">Jon of the Clue Crew reports from the amphitheater at Carlsbad Caverns Nat'l Park, New Mexico.</a>)  Each night thousands of Mexican freetail bats leave the batcave in search of food using this process in which sound reflects off prey'
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