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For more than nine hours a vigorous plume of ash erupted, eventually reaching 12 to 15 miles (20-25 kilometers) above sea level. The plume moved eastward at an average speed of 60 miles per hour (95 k...
LMY25T03_2HJCNX1

For more than nine hours a vigorous plume of ash e...

Mount St. Helens erupted often between 1980 and 1986. An explosive eruption on March 19, 1982, sent pumice and ash 9 miles (14 kilometers) into the air, and resulted in a lahar (the dark deposit on th...
LMY25T03_2HJCNH1

Mount St. Helens erupted often between 1980 and 19...

July 22, 1980 eruption of Mount St. Helens, with Mount Rainier, Washington, in the background. July 22, 1980.
LMY25T03_2HJCP3Y

July 22, 1980 eruption of Mount St. Helens, with M...

Giant plumes of volcanic ash pour from Mount St. Helens on the day of its major eruption, May 18, 1980.
LMY25T03_2BDY06K

Giant plumes of volcanic ash pour from Mount St. H...

An Hawaiian Volcano Observatory geologist monitoring K?lauea ?volcano is erupting. Hawaii, USA. With the summit eruption continuing through the night, HVO scientists monitor the eruption for changes i...
LMY25T03_2JFX3H1

An Hawaiian Volcano Observatory geologist monitori...

A USGS team conducts a leveling survey on a volcanic mountain on August 24, 2006. The process involves precise measurements to monitor any changes in the landscape due to seismic activity or geologica...
LMY25T03_D70EKB

A USGS team conducts a leveling survey on a volcan...

Japan, Tokyo Earthquake, 1923
LMY23T03_HRNTWJ

Japan, Tokyo Earthquake, 1923

Japan, Tokyo Earthquake, 1923
LMY23T03_HRNTWK

Japan, Tokyo Earthquake, 1923