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Colorado National Monument
The "Pipe Organ" is another rock pinnacle located at the end of the Ottos Trail.
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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/2005/colorado/html2/colo072.htm
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Last modified: 7/30/2005