It's been more than 30 years since Mount St. Helen's erupted on May 30, 1980. Before the eruption it was 9,677 feet tall,  but only 8,363 feet after, having lost the top 1,300 feet of mountain.

It’s been more than 30 years since Mount St. Helen’s erupted on May 30, 1980. Before the eruption it was 9,677 feet tall, but only 8,363 feet after, having lost the top 1,300 feet of mountain.