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Krakatoa eruption of 1883 could be heard 3000 miles away

When the volcanic island of Krakatoa erupted in 1883, it “let out a noise louder than any it has made since.” Measuring over 172 decibels, it produced “a blast of high pressure air so powerful that it ruptured the eardrums of sailors 40 miles away.”

The Sound So Loud That It Circled the Earth Four Times

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