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Big Bend National Park
Historic entrances to the Mariscal Mine have been sealed off to protect park visitor. They are now roosting sites for bats.
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U.S. Department of the Interior - U.S. Geological Survey - Geology Discipline
The URL of this page is: http://3dparks.wr.usgs.gov/bigbend/html/bb267.htm
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Last modified: 4/1/2005

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