The real Krakatoa exploded so violently back in 1883 that was the loudest noise EVER recorded. You could hear it New York and London at the same time. The explosion was 13,000 times more powerful than the bomb that destroyed Hiroshima in 1945. Over 36,000 people were killed. Thew video is of another volcano that rose from Krakatoa called Krakatau (or child of Krakatoa) and it's very active to this day!
image courtesy of getty images