Here are some more links to get more information:

http://volcano.und.edu/vwdocs/volc_images/north_america/california/shasta.html

http://en.wikipedia.org/wiki/Mount_Shasta

http://www.climbingmtshasta.org/

http://vulcan.wr.usgs.gov/Volcanoes/Shasta/framework.html

http://vulcan.wr.usgs.gov/Volcanoes/Shasta/Locale/framework.html

http://www.shastahome.com/

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