National Geographic: Eye in the Sky--Volcanoes

NATURE’S
FURY

Volcanoes

Tornadoes

Hurricanes

Wildfires

Earthquakes

<SCRIPT language="JavaScript1.1" SRC="http://ad.doubleclick.net/adj/ng.features2000/eyeintheskycontent;abr=!ie;sz=120x60;tile=2;ord=?"></SCRIPT> <NOSCRIPT><A HREF="http://ad.doubleclick.net/jump/ng.features2000/eyeintheskycontent;abr=!ie;sz=120x60;tile=2;ord=?"><IMG SRC="http://ad.doubleclick.net/ad/ng.features2000/eyeintheskycontent;abr=!ie;sz=120x60;tile=2;ord=?" border=0 height="60" width="120"></A></NOSCRIPT>

Spouting fire from the belly of the Earth, volcanoes have both fascinated and terrorized humans since ancient times. Most feared are explosive eruptions that can quickly envelope their surroundings with clouds of killer heat.

Photo of a group of people looking at a picture of Mt. St. Helens against the actual Mt. St. Helens