Mount St. Helens and Mount St. Helens, the United States
Mount St. Helens and Mount St. Helens (English: Mount St.Helens) is a ภูเขาไฟมีพลัง cone type alternating layers. Located in this county, Washington, United States eroticism in the Northwest Pacific region. Far from the city to the South 154 kilometers, Seattle80 kilometers, Mount St. Helens the most famous from the violent explosion on 18 may c.Professor 1980 (the 2523) when 8:32 local time zone (Pacific) [1]. The volcano disaster that has killed most. And cause economic damage, the most in the history of the United States.57 cases houses 250 after 47 bridge of long rail 15 miles (kilometers) long and 24 highway 185 miles (kilometers) 298 was destroyed. The explosion caused a landslide large, reduce the height of the mountains, from 9677 feet (meters), 2 950 left, 8 365 feet (meters), 2 550 land collapse volume more than 0.7 cubic miles (2.9 cubic kilometers). After that, it has founded the national monuments, Mount St. Helens, to protect, conserve the volcano. A scientific study and volcanic
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