In 1980 Mount St. Helens exploded in one of the most powerful eruptions of the 20thcentury. Everything living was buried beneath 300 feet of avalanche debris, covered with steaming mud, topped with a superheated layer of frothy rock from deep within the centre of the earth. It seemed as though St. Helens might remain wasteland forever. Then one day, everything changed. A single...$May 18 1980, Mt. St. Helens in Washington. seismic wave detector, solid lava dome build up, pressurized gas explosion, lupine as pioneering plant.$火山爆发造成湖泊中氧气断绝动植物死亡，经过15年时间，湖中出现虹鳟鱼，自然获得重生。最后旁白说羽扇豆和土囊鼠是当地生态恢复的关键因素。$央视9套正在播放这部纪录片，生命能从最残酷的毁灭中重生，大自然真是一个不朽的奇迹！除了人类自己，没有什么能毁灭她。
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