1980
Mount St. Helens is a stratovolcano, which is a tall, conical volcano composed of layered lava flows and pyroclastic ejecta. It is known for its catastrophic eruption in 1980.
The last eruptive activity of Mount St Helens was in July of 2008.
Helen
The eruption that Mt St Helen has is an exploding volcano that shoots lava and rocks into the air.
The 1980 eruption of Mount St. Helens.
Mt St Helens first erupted on May 18, 1980
About 2 cubic km of material was erupted. About the size of the Mt St Helens eruption in 1980.
The eruption of Mount St. Helens in 1980 was relatively short, lasting for about nine hours. However, the effects of the eruption, including the eruption column and pyroclastic flows, had long-lasting impacts on the surrounding area.
The last major eruption in the US was the 1980 eruption of Mount St. Helens in Washington. This eruption resulted in significant damage to the surrounding area and was one of the most destructive volcanic events in US history.
Very violent. The last big eruption flattened trees and anything else for miles. It looked like a bomb exploded.
mt. st. Helens erupted in may 18, 1980
Extreme Peril - 2010 Mt- St- Helen's Eruption was released on: USA: 11 March 2010