4/5
圣海伦火山也是一处很独特的自然奇观,好像还是要做活火山,就是爆发期基本上很短了,几百年没有爆发过了,这出火山的地理位置也是蛮好的,可以看到很多的火山地质特性。小思文
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Mount St. Helens is an active volcano located in Scamenia County, Washington State, Pacific Northwest, United States, 154 kilometers south of Seattle. It is part of the Cascade Mountains. The mountain takes its name from the British diplomat Lord St Helens, a friend of the explorer George Vancouver who surveyed the site in the 18th century. Mount St. Helens is part of the Pacific Ring of Fire, which contains more than 160 active volcanoes, and is known for its ash eruptions and pyroclastic flows.