E-Mail IMAGE: Some of the devastation in Fukushima as a result of the 2011 Japan tsunami, which killed over ten thousand people. view more Credit: Shutterstock Alaska is renowned for its postcard pretty mountains, vast spaces and massive earthquakes. But not many people know the highest tsunami wave ever accurately measured - at 524-metres - occurred in Alaska. It happened 63 years ago during a tsunami - an unusual wave that is usually generated by either a large undersea earthquake; volcanic eruptions; landslides that fall into the sea or that occur underwater; and asteroids. Evidence of the destruction caused by the Lituya Bay, Alaska tsunami can still be seen from space.