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Big Bend National Park
Park visitors rest under a tamarisk or salt cedar (Tamarix ramosissima) near a sand dune and small cave in Boquillas Canyon. Tamarisk is an invasive species that has spread throughout river systems of the Desert Southwest.
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U.S. Department of the Interior - U.S. Geological Survey - Geology Discipline
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Last modified: 4/1/2005

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