Newly released footage of the 2011 tsunami in Japan shows exactly how devastating it truly was.
In a matter of minutes, a river goes from gradually moving, to quickly rushing, to overflowing, taking houses and everything else in its way down with it.
The terrifying footage, equipped with a man eerily speaking over a loudspeaker, shows just how quickly natural disasters can take a calm scene and turn it into a disaster area, without giving the people any time to react.
In a matter of 20 minutes, a neighborhood in Japan goes from serene to completely flooded and destroyed with wildfires sparking everywhere.
What seems to be a general calmness of the people in the video may very well be just a matter of shock.
Check out the disturbing video below.