Crater Lake
http://www.nps.gov/crla/index.htm
http://www.nps.gov/archive/crla/home.htm
http://www.nps.gov/archive/crla/geo1.htm
http://vulcan.wr.usgs.gov/Volcanoes/CraterLake/framework.html
http://vulcan.wr.usgs.gov/Volcanoes/CraterLake/EruptiveHistory/crater_lake_geologic_setting.html
http://vulcan.wr.usgs.gov/Volcanoes/CraterLake/MazamaAsh/description_mazama_ash.html http://vulcan.wr.usgs.gov/Volcanoes/CraterLake/description_crater_lake.html
The pinnacles at Crater Lake http://www.serve.com/wizjd/parks/crater_lake/crater_lake.html
http://www.nps.gov/joda/index.htm
http://gorp.away.com/gorp/resource/us_nm/or_john.htm
http://3dparks.wr.usgs.gov/johnday/index.html
http://www.geotimes.org/mar08/article.html?id=Travels0308.html
http://www.oregongeology.org/sub/learnmore/Placestosee/SheepRock.htm http://www.nature.nps.gov/geology/parks/joda/
High Desert: Newberry National Volcanic Monument
http://www.fs.fed.us/r6/centraloregon/newberrynvm/newberryvol.shtml
http://www.fs.fed.us/r6/centraloregon/newberrynvm/index.shtml
http://vulcan.wr.usgs.gov/Volcanoes/Newberry/Locale/framework.html
http://vulcan.wr.usgs.gov/Volcanoes/Newberry/description_newberry.html
http://gorp.away.com/gorp/resource/us_nm/or_newbe.htm
http://vulcan.wr.usgs.gov/Volcanoes/LavaButte/description_lava_butte.html
Cascades
http://vulcan.wr.usgs.gov/
http://vulcan.wr.usgs.gov/Volcanoes/Sisters/description_three_sisters.html
http://vulcan.wr.usgs.gov/Glossary/ShieldVolcano/framework.html
http://vulcan.wr.usgs.gov/Volcanoes/Bachelor/description_bachelor.html
Cascades South Sister Bulge http://sci.tech‐archive.net/Archive/sci.geo.geology/2005‐09/msg00111.html http://sci.tech‐archive.net/Archive/sci.geo.geology/2005‐09/msg00076.html Mt Saint Helens
http://vulcan.wr.usgs.gov/Volcanoes/MSH/description_msh.html
http://www.fs.fed.us/gpnf/volcanocams/msh/
http://vulcan.wr.usgs.gov/Volcanoes/MSH/Publications/MSHPPF/MSH_past_present_future.html
http://vulcan.wr.usgs.gov/Volcanoes/MSH/Eruption04/framework.html
http://vulcan.wr.usgs.gov/Volcanoes/MSH/Images/MSH04/crater_dome_eruption_april_2006.html
http://antwrp.gsfc.nasa.gov/apod/ap060509.html
http://vulcan.wr.usgs.gov/Volcanoes/MSH/Images/MSH04/framework.html
http://en.wikipedia.org/wiki/1980_eruption_of_Mount_St._Helens
Specific Biomes