7.82012
8.71972
8.52019
8.41999
8.22010
8.42014
8.51994
7.92015
7.62017
8.42010
7.52016
8.52014
7.52015
8.21979
7.02023
7.42013
7.42009
8.71994
7.22019
8.21980
The 1980 eruption of Mount St. Helens was the deadliest in U.S. history. Survivor testimonies and rare images reveal the cataclysms it unleashed.