Mount St. Helens 29 years later
nature | (0)
May 18, 1980 Washington state’s Mount St. Helens volcano explodes in a cataclysm that pulverizes its top 1,300 feet, deforests nearby valleys, sends ash 12 miles into the air and kills 57 people. The picture-perfect snow-capped peak becomes the center of a bleak, gray mudscape. The volcano, about 55 miles northeast of Portland, Oregon, had lain dormant since 1857. In 1980 the catastrophic eruption changed the shape of the mountain quickly. A magnitude 5.1 earthquake preceded the largest landslide in recorded history when the entire northern side of the mountain slid away. This collapse depressurized a giant, building bubble of ...