US GEOLOGICAL SURVEY / SCIENCE PHOTO LIBRARY US GEOLOGICAL SURVEY / SCIENCE PHOTO LIBRARY
Earthquake damage. Fence compressed by a major earthquake that struck an area just west of Yellowstone National Park, Montana, USA, on 17th August 1959. It killed 28 people and was the strongest earthquake to have been recorded in the United States at the time, measuring 7.5 on the Richter scale. Scientists W.B. Hamilton and R.E. Wallace are seen at left.
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