This volcano famously exploded on May 18th, 1980, the most devastating and economically damaging eruption in the history of the United States. This historic photo shows what it looked like seven decades earlier.

Source: Library of Congress
This volcano famously exploded on May 18th, 1980, the most devastating and economically damaging eruption in the history of the United States. This historic photo shows what it looked like seven decades earlier.
Source: Library of Congress