
1980 Mount St. Helens eruption considered ‘game changer’ for volcanic observation
Fifty-seven people were killed in the eruption of Mount St. Helens on May 18, 1980. SKAMANIA COUNTY, Wash. — The May 18, 1980, eruption of Mount St. Helens triggered the largest landslide in recorded history, claiming 57 lives and changing the landscape …