RELATED: Mount St. Helens awakens: A timeline of the 1980 eruption And then there was a second eruption; another cycle began in the fall of 2004, running for another four years until 2008.

Mt. Ontake's last large eruption was in 1979, one year before Mount St. Helens. But 7 years ago, Ontake came alive again with a release of steam and ash, but no magma.

The new top of Mount St. Helens is a crater more than a mile wide, while inside is a new lava dome caused by an eruption—a much less dramatic one—that lasted from 2004 to 2008.

Mt. St. Helens erupted on May 18, 1980, sending a column of ash 15 miles high in less than 15 minutes, which caused complete darkness in Spokane, 250 miles east.

In this week’s volcanic news update, two significant events have captured global attention. The first is the eruption of a volcano near Mexico City, a powerful natural phenomenon that has been ...

May 18 is the anniversary of the eruption of Mt. St. Helens in Washington State. The top pic. (from Wikipedia) is the mountain erupting on May 18, 1980. Before the eruption At 8:32 am on May 18, 1… ...

After the 1980 eruption, a lahar traveled 50 miles from Mount St. Helens, ripping out bridges and destroying homes.

SEATTLE, Oct. 6 -- Mount St. Helens has calmed down and is no longer likely to erupt at any moment, the U.S. Geological Survey announced Wednesday. A day after telling residents of the Pacific ...

Mount St. Helens sends a huge column of steam and ash skyward, one day after scientists warned an eruption was imminent. Before Friday's mild eruption, Mount St. Helens had lain dormant for 18 years.