Krakatoa: On August 27, 1883, after several weeks of rumbling and threatening (accompanied by lesser eruptions), the island of Krakatoa literally exploded in a series of four volcanic eruptions. The explosions were so powerful that they were heard clearly some 3,000 miles away, global weather patterns were disrupted for years to come, and the shockwave circled the globe seven times! Since then, the island has grown up again and is now known as Anak Krakatau (Son of Krakatau).
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Volcanoes are awesome