Definition of mount st. helens Mount st. helens
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What does mount st. helens mean?
Wikipedia 
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Mount St. Helens is a volcano in the U.S. state of Washington. It is 96 miles (154 km) south of Seattle and 53 miles (85 km) northeast of Portland, Oregon. The volcano is in Cascade Range of mountains. It is part of the Cascade Volcanic Arc in the Pacific Ring of Fire that includes over 160 active volcanoes. Mount St. Helens was first called "Louwala-Clough", which means "smoking" or "fire mountain" in the language of the Native American Klickitat people.
This volcano is well known for its explosions and flows of lava. Its most famous volcanic eruption was on May 18, 1980. This was the deadliest and most economically destructive volcanic event in the history of the United States. In 1982, U.S. President Ronald Reagan and the United States Congress made the Mount St. Helens National Volcanic Monument, a 110,000 acre (445 km²) area around the volcano that is also a part of the Gifford Pinchot National Forest.
History.
Before the eruption in 1980, Mount St. Helens was the fifth-highest peak in Washington. The peak rose more than 5,000 feet (1,525 m) above its base, where it rises from the ridges that are around it. It stood out from the surrounding hills because of the symmetrical cone shape and the snow that covered the top. Because of its cone-shape, it was called the "Mount Fuji of America", after the famous Mount Fuji which is a symbol of Japan.
May 18, 1980.
In the months before the large eruption that took place on May 18, 1980, there were many signs of volcanic activity.
