
The biggest eruption of the 1900s was in Alaska
The largest volcanic eruption of the 20th century occurred in 1912 at Novarupta on the Alaska Peninsula.
Why it is true
An estimated 15 cubic kilometers of magma erupted in 60 hours. That is about 30 times the volume erupted by Mount St. Helens in 1980.
Check the source
We keep the original reference beside the claim so you can inspect the evidence and surrounding context yourself.
Open U.S. Geological Survey