Media Contributed by Rick
Sabancaya, with Ampato in the background By Norm Banks, U.S. Geological Survey
The "Great Explosion" of Lassen Peak 1815 Eruption column of May 22, 1915 was seen as far as 150 mi (240 km) away. In the foreground is the Loomis Hot Rock, one of the many large boulders dislodged in the eruption that were too hot to touch for days after. (Photograph by B. F. Loomis; modern photo)
Mount St. Helens October 2004 eruption Plume of volcanic ash and steam
Mount St. Helens Eruption on July 22, 1980
Mount St. Helens Four months after the eruption, photographed from approximately the same location as the earlier picture
Sequence of events on May 18 By Lyn Topinka - USGS Cascades Volcano Observatory
Mount St. Helens Eurupts On May 18, 1980, at 8:32 a.m. Pacific Daylight Time, a magnitude 5.1 earthquake shook Mount St. Helens. The bulge and surrounding area slid away in a gigantic rockslide and debris avalanche, releasing pressure, and triggering a major pumice and ash eruption of the volcano. Thirteen-hundred feet (400 meters) of the peak collapsed or blew outwards. As a result, 24 square miles (62 square kilometers) of valley was filled by a debris avalanche, 250 square miles (650 square kilometers) of recreation, timber, and private lands were damaged by a lateral blast, and an estimated 200 million cubic yards (150 million cubic meters) of material was deposited directly by lahars (volcanic mudflows) into the river channels. Fifty-seven people were killed or are still missing. USGS Photograph taken on May 18, 1980, by Austin Post.
Mount St. Helens Indigenous American legends were inspired by the volcano's beauty
Resolution and Discovery off the Coast of Tahiti, by Samuel Adkin
