The 1257 A.D. explosion was eight times stronger than Krakatoa (pictured).

The 1257 A.D. explosion was eight times stronger than Krakatoa (pictured).

Illustration from Hulton Archive/Getty Images

Deadly 13th-Century Volcano Eruption: Mystery Solved?

Scientists find source of massive eruption felt centuries ago around the globe.

ByBrian Handwerk
October 1, 2013

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