Click here to search other web sites at Penn State for information on this subject. The good, the bad and the bogus from the web as a whole are constantly being cataloged. Take your chances and click here to search the entire Web for information on this subject. According to volcanologists, volcanoes can be dangerous even when not erupting. In some instances, soft spots on volcanoes that simply collapse from the side may trigger mudslides that can be more destructive than eruptions.
Older volcanoes are especially vulnerable.
They have been sitting around for awhile in their own fluids growing soft. As hydrothermal fluids circulate, they change the structure of the rocks and minerals, softening the volcanoes and making them more likely to collapse. This page was updated on Jun 21, 2001. If you are experiencing problems with this page, please contact the EMS Webmaster .