The Most Destructive Wave in Earth’s (Known) History

Rising from the Atlantic ocean, hundreds of miles off the coast of West Africa, there’s a volcano with a 73,000-year-old scar swiped across its face. This is the mark of an ancient catastrophe, etched into the rock when a huge chunk of the volcano’s eastern flank rushed all at once into the sea. That particular flank collapse displaced enough water to generate a powerful tsunami—one that, new evidence shows, might have been much, much bigger than geologists previously believed.
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