Terrifying History on Instagram: "On March 11, 2011, aerial footage captured the incomprehensible scale of destruction as Japan’s Tohoku tsunami engulfed coastal communities following a 9.0 magnitude earthquake. The helicopter shots reveal entire neighborhoods being erased in real-time - houses, cars and infrastructure crumbling like sandcastles before the black tide. Particularly chilling is the footage of Natori City in Miyagi Prefecture, where the tsunami wave appears as a dark stain spreadin

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National Geographic series gives comprehensive look into deadly 2004 Indian Ocean tsunami