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<!DOCTYPE html public "-//w3c//dtd html 3.2//en"> <html> <head><script type="text/javascript" src="/_static/js/bundle-playback.js?v=HxkREWBo" charset="utf-8"></script> <script type="text/javascript" src="/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("https://web.archive.org/web"); __wm.wombat("http://vulcan.wr.usgs.gov/","20100528144029","https://web.archive.org/","web","/_static/", "1275057629"); </script> <link rel="stylesheet" type="text/css" href="/_static/css/banner-styles.css?v=S1zqJCYt" /> <link rel="stylesheet" type="text/css" href="/_static/css/iconochive.css?v=3PDvdIFv" />  <title>USGS Cascades Volcano Observatory (CVO)</title> <meta name="description" content="The U.S. Geological Survey's Cascades Volcano Observatory Website, which focuses on hazards, activity, history, and monitoring of volcanoes, with emphasis on volcanoes of the Western United States."> <meta name="keywords" content="USGS,CVO,Cascades Volcano Observatory,volcano observatories,volcano bibliography,vulcanology,observatory,Cascades,volcano,volcanoes,volcano research,projects,volcano monitoring,monitoring volcanoes,volcano hazards,volcanic hazards,volcanic gas,volcanic ash,ash,tephra,pyroclastic flows,landslides,lahars,mudflows,debris flows,seismicity,earthquakes,volcano seismicity,seismographs,volcano deformation,EDM,tiltmeters,GPS,seismology,deformation,plumes,eruptions,volcanic eruptions,volcanic blasts,lava,lava dome,volcanic domes,dome,May 18,caldera,shield volcano,stratovolcano,cinder cone,volcano photos,photo archives,blowdown,plate tectonics,hazards assessment,hazards maps,hazards reports,hydrology,hydrothermal,erosion,sediment,river drainages,North Fork Toutle River,Toutle River,debris avalanche,crater,Washington volcanoes,Oregon volcanoes,California volcanoes,Mount St. Helens,Mt. St. Helens,Mount St. Helens National Volcanic Monument,MSH,Mount Rainier,Mount Rainier National Park,Mount Adams,Mount Baker,Glacier Peak,Mount Hood,Mount Jefferson,Three Sisters,South Sister,Mount Bachelor,Newberry,Newberry Caldera,Newberry Volcanic National Monument,Crater Lake,Crater Lake National Park,Shasta,Lassen Peak,Medicine Lake,Mammoth Lakes"> </head> <body bgcolor="#ffffff"> <table border="0" cellpadding="0" cellspacing="1" width="100%" bgcolor="#ffffff"> <tr> <td bgcolor="#000000"> <a href="https://web.archive.org/web/20100528144029/http://www.usgs.gov/"> <img src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/logo.gif" alt="Welcome to the USGS Cascades Volcano Observatory Website - click this logo to link to the National USGS Website" border="0" height="72" width="600"></a> </td> </tr> </table> <table border="0" cellpadding="2" cellspacing="1" width="100%"> <tr> <td bgcolor="#555555"> <font size="+2"><b><font color="#ffffff"> Cascades Volcano Observatory</font></b></font> </td> </tr> </table> <table border="0" cellpadding="3" cellspacing="1" width="100%"> <tr> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://www.usgs.gov/" target="top"> <b>USGS Home</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://geology.usgs.gov/" target="top"> <b>Geology</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://water.usgs.gov/" target="top"> <b>Water</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://volcanoes.usgs.gov/" target="top"> <b>VHP</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://www.avo.alaska.edu/" target="top"> <b>AVO</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://hvo.wr.usgs.gov/" target="top"> <b>HVO</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://quake.wr.usgs.gov/VOLCANOES/LongValley/index.html" target="top"> <b>LVO</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://volcanoes.usgs.gov/yvo/" target="top"> <b>YVO</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/IndexList/framework.html"> <b>Search Our Site</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/sitemap.html"> <b>Site Map</b></a> </td> <td align="center" valign="top" bgcolor="#ffcc99"> <a href="https://web.archive.org/web/20100528144029/mailto:GS-CVO-WEB@usgs.gov"> <b>Contact Us</b></a> </td> </tr> </table> <hr noshade> <table border="0" cellpadding="10" cellspacing="0" width="100%"> <tr> <td valign="top" width="30%" bgcolor="#dddddd"> <h2>Special Features</h2> <p> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/News/framework.html" onmouseover="document.pic1.src='Imgs/Gif/Buttons/search_button.gif'" onmouseout="document.pic1.src='Imgs/Gif/Buttons/volcano_button.gif'"> <img alt="Click button for CVO News and Current Events Menu" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/Buttons/volcano_button.gif" border="2" height="45" width="94" name="pic1"></a> <br><a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/News/framework.html"> <b>News and Current Events</b></a> <br> <font size="-1"> -- Mount St. Helens and other Cascade Range volcano updates, images, and links - "Quick links" - CVO Talks and Presentations - etc. </font> <p> <a href="https://web.archive.org/web/20100528144029/http://volcano.wr.usgs.gov/cvo/current_updates.php" onmouseover="document.pic7.src='Imgs/Gif/Buttons/seismic_button.gif'" onmouseout="document.pic7.src='Imgs/Gif/Buttons/volcano_button.gif'"> <img alt="Click button for Cascade Range Current Update" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/Buttons/volcano_button.gif" border="2" height="45" width="94" name="pic7"></a> <br><a href="https://web.archive.org/web/20100528144029/http://volcano.wr.usgs.gov/cvo/current_updates.php"> <b>Cascade Range Current Activity Updates</b></a> <br> <font size="-1"> -- Current Status of the Cascade Range Volcanoes </font> <p> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/Cascades/volcanoes_cascade_range.html" onmouseover="document.pic2.src='Imgs/Gif/Buttons/map_button.gif'" onmouseout="document.pic2.src='Imgs/Gif/Buttons/volcano_button.gif'"> <img alt="Click button for CVO Cascade Range Volcanoes Summary Page" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/Buttons/volcano_button.gif" border="2" height="45" width="94" name="pic2"></a> <br> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/Cascades/volcanoes_cascade_range.html"> <b>Cascade Range Volcanoes Listing</b></a> <br> <font size="-1"> -- Cascades Volcanoes listing</font> <p> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Publications/hazards_reports.html" onmouseover="document.pic3.src='Imgs/Gif/Buttons/seismic_button.gif'" onmouseout="document.pic3.src='Imgs/Gif/Buttons/volcano_button.gif'"> <img alt="Click button for CVO Volcano Hazards Assessment Reports and Maps Menu" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/Buttons/volcano_button.gif" border="2" height="45" width="94" name="pic3"></a> <br> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Publications/hazards_reports.html"> <b>Hazards Assessment Reports and Maps</b></a> <br> <font size="-1"> -- Latest Hazards Assessment Reports and Maps (in PDF) for various volcanoes in the Cascade Range </font> <p> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Outreach/framework.html" onmouseover="document.pic4.src='Imgs/Gif/Buttons/publications_button.gif'" onmouseout="document.pic4.src='Imgs/Gif/Buttons/volcano_button.gif'"> <img alt="Click button for CVO Educational Outreach Menu" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/Buttons/volcano_button.gif" border="2" height="45" width="94" name="pic4"></a> <br> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Outreach/framework.html"> <b>Educational Outreach</b></a> <br> <font size="-1"> -- Learn about Volcanoes - FAQ's - Terminology - Read About Volcanoes - Become a Volcanologist - Activities and "Fun Stuff" - Videos and Posters - "Pictograms" - Teachers Packets and Aids - Educational Links, etc. </font> <p> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/framework.html" onmouseover="document.pic5.src='Imgs/Gif/Buttons/river_button.gif'" onmouseout="document.pic5.src='Imgs/Gif/Buttons/volcano_button.gif'"> <img alt="Click button for CVO Living With Volcanoes Menu" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/Buttons/volcano_button.gif" border="2" height="45" width="94" name="pic5"></a> <br> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/framework.html"> <b>Living With Volcanoes</b></a> <br> <font size="-1"> -- America's Volcanic Past - The "Plus Side" of Volcanoes - Historical, Cultural, and Economic Side of Volcanoes - "VolcanoCams" - Volcanoes in the Movies - What to do if a Volcano Erupts, etc. </font> <p> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/VisitVolcano/framework.html" onmouseover="document.pic6.src='Imgs/Gif/Buttons/camera_button.gif'" onmouseout="document.pic6.src='Imgs/Gif/Buttons/volcano_button.gif'"> <img alt="Click button for CVO Visit A Volcano Menu" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/Buttons/volcano_button.gif" border="2" height="45" width="94" name="pic6"></a> <br> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/VisitVolcano/framework.html"> <b>Visit a Volcano</b></a> <br> <font size="-1"> -- Information and Maps to the Cascade Range - Travel and Hiking Information - Links to other Agencies - National Parks, Volcanic Monuments, and National Forests - Tourism and Lodging - America's Volcanic Past - Armchair Tours of the Cascade Volcanoes - Climb A Volcano, etc. </font> <p> <table border="3" cellpadding="5" bgcolor="#cccc99"> <tr> <td bgcolor="#ffffff"> <table border="0" cellpadding="5" bgcolor="#cccc99"> <tr> <td> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/Historical/LewisClark/" onmouseover="document.pic6.src='Imgs/Gif/Buttons/camera_button.gif'" onmouseout="document.pic6.src='Imgs/Gif/Buttons/volcano_button.gif'"> <img alt="Click button for The Volcanoes of Lewis and Clark" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/Buttons/volcano_button.gif" border="2" height="45" width="94" name="pic6"></a> <br> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/Historical/LewisClark/"> <b>The Volcanoes of Lewis and Clark</b></a> <br> <font size="-1">Two Hundred years ago on October 16, 1805, Lewis and Clark and the men of the "Corps of Discovery" reached the Columbia River. On October 18, 1805, the men began their journey down the Columbia River where they reached the Pacific Ocean on November 15, 1805. On the journey the men saw five different Cascade Range volcanoes. They even named Mount Jefferson after their benefactor, Thomas Jefferson. The Cascades Volcano Observatory's <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/Historical/LewisClark/">"The Volcanoes of Lewis and Clark"</a> begins on the Clearwater River in early October, and uses the 1814 Biddle publication of the journey to follow Lewis and Clark down the Clearwater, Snake, and Columbia Rivers. This web presentation includes old illustrations, maps, and information about the landscape and the volcanoes which Lewis and Clark saw. </font> </td> </tr> </table> </td> </tr> </table> <p> </td> <td valign="top" align="left" width="70%" bgcolor="#ffffff"> <h2>In the News</h2> <dl> <dd> <table border="0" bordercolor="#cccccc" cellpadding="10" height="350" width="590"> <tr> <td> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/MSH/30Years/framework.html"> <img border="0" alt="click to enter" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Volcanoes/MSH/30Years/frontpage_graphic_msh30_enter.png"> </a> <br>     <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/MSH/30Years/framework.html"> <b>Mount St. Helens - 30 Years Ago Today ...</b></a> </td> </tr> </table> </dl> <br> <h2>CVO Information</h2> <ul> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/News/new.html"> NEW on this server</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/CVO_Info/framework.html"> CVO Office Information</a> <i> -- Who We Are and What We Do</i> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Photo/copyright_info.html"> Use of CVO Materials</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/sitemap.html"> Site Map</a> </ul> <br> <h2> Mount St. Helens</h2> <ul> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/MSH/30Years/framework.html"> Mount St. Helens - 30th Anniversary Menu</a> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/MSH/30Years/framework.html"><img border="0" alt="new" src="https://web.archive.org/web/20100528144029im_/http://vulcan.wr.usgs.gov/Imgs/Gif/Buttons/new_yellow.gif"></a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/MSH/Eruption04/framework.html"> Mount St. Helens - 2004-2008 Eruption Menu</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/MSH/May18/framework.html"> Mount St. Helens - May 18, 1980 Eruption Menu</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/MSH/framework.html"> Mount St. Helens - General Menu</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/MSH/Images/framework.html"> Mount St. Helens - Photo Archives</a> </ul> <br> <h2> Other Volcanoes</h2> <ul> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/framework.html"> Volcanoes</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/Cascades/framework.html"> Cascade Range</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/Historical/framework.html"> Cascade Range "Volcanoes and History"</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/VisitVolcano/framework.html"> Visit a Volcano</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Outreach/AboutVolcanoes/framework.html"> Learn About Volcanoes</a> <i> -- FAQ's</i> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Photo/framework.html"> Photo Archives</a> </ul> <br> <h2>Menus of Interest</h2> <ul> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Glossary/framework.html"> Glossary of Hazards, Features, and Terminology</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Hazards/framework.html"> Hazards</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Publications/hazards_reports.html"> Hazards Assessment Reports and Maps</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Glossary/Hydrology/framework.html"> Hydrology</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Outreach/AboutVolcanoes/framework.html"> Learn About Volcanoes - FAQ</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/framework.html"> Living With Volcanoes</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Graphics/framework.html"> Maps and Graphics</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Monitoring/framework.html"> Monitoring</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Outreach/framework.html"> Outreach</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Monitoring/real_time_projects.html"> "Real-Time" Monitoring</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Photo/framework.html"> Photo Archives</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Projects/framework.html"> Projects and Research</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Publications/framework.html"> Publications and Reports</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Publications/ordering.html"> Publications and Reports - How-To-Order</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Vdap/framework.html"> VDAP - Volcano Disaster Assistance Program</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Vhp/framework.html"> VHP - Volcano Hazards Program </a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Vhp/framework.html"> Volcano Observatories</a> </ul> <br> <h2>Miscellaneous</h2> <ul> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Servers/usgs_servers.html"> USGS</a> -- Public Website Links <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Miscellaneous/framework.html"> Miscellaneous</a> -- LOGOs, Geologic Time Scale, Metric Conversions, RGB to Hex, MORE <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Projects/SedLab/framework.html"> Sedlab</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Servers/framework.html"> Useful Links</a> -- Maps, Weather, Roads, Travel, Volcanoes <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Publications/ordering.html"> How-To-Order USGS Reports, Maps, Aerial Photographs, etc.</a> </ul> <br> <h2>USGS Volcano Hazards Program Links</h2> <ul> <li> <a href="https://web.archive.org/web/20100528144029/http://volcanoes.usgs.gov/" target="top"> VHP - Volcano Hazards Program Website</a> <li> <a href="https://web.archive.org/web/20100528144029/http://www.avo.alaska.edu/" target="top"> AVO - Alaska Volcano Observatory Website</a> <li> <a href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/CVO_Info/framework.html" target="top"> CVO - Cascades Volcano Observatory Office Information</a> <li> <a href="https://web.archive.org/web/20100528144029/http://hvo.wr.usgs.gov/" target="top"> HVO - Hawaiian Volcano Observatory Website</a> <li> <a href="https://web.archive.org/web/20100528144029/http://lvo.wr.usgs.gov/" target="top"> LVO - Long Valley Observatory Website</a> <li> <a href="https://web.archive.org/web/20100528144029/http://volcanoes.usgs.gov/yvo/" target="top"> YVO - Yellowstone Volcano Observatory Website</a> </ul> <br> <br> </td> </tr> </table> <hr noshade> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td> <map name="buttonbar"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/home.html" coords="0,0 94,61" alt="CVO HomePage"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/framework.html" coords="95,0 210,21" alt="Volcanoes of the World Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Volcanoes/MSH/framework.html" coords="95,21 210,42" alt="Mount St. Helens Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/LivingWith/framework.html" coords="95,40 210,61" alt="Living With Volcanoes Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Publications/framework.html" coords="211,0 290,21" alt="Publications and Reports Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Monitoring/framework.html" coords="211,21 290,42" alt="Volcano Monitoring Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Servers/framework.html" coords="211,40 290,61" alt="Servers and Useful Sites Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Hazards/framework.html" coords="291,0 352,21" alt="Volcano Hazards Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Projects/framework.html" coords="291,21 352,42" alt="Research and Projects Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Outreach/framework.html" coords="291,40 352,61" alt="Educational Outreach Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Glossary/framework.html" coords="352,0 480,21" alt="Hazards, Features, and Terminology Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Graphics/framework.html" coords="352,21 470,42" alt="Maps and Graphics Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Photo/framework.html" coords="352,40 470,61" alt="CVO Photo Archives Menu"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/Miscellaneous/ConversionTables/conversion_table.html" coords="471,0 539,61" alt="Conversion Tables"> <area shape="rect" href="https://web.archive.org/web/20100528144029/http://vulcan.wr.usgs.gov/IndexList/framework.html" coords="540,0 617,61" alt="CVO Index - 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