You recall why Mt. Vesuvius is famous -we've posted about the eruption of 79AD before. Now consider this photograph of the volcano taken on January 1 from the ISS.
The volcano has erupted many times since then, including in the 20th century. Got that? It’s still active. Now take another look at that photo, and let the volcano’s surroundings settle in to your mind. It sits just a few kilometers from Naples, and more than half a million people live in the volcano’s red zone—where destruction from a big eruption would be swift and brutal.
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(Image credit: NASA)