A terrifying sequence of events unfolded in Nepal after a glacier collapse sent an enormous surge of water, ice and debris racing down a Himalayan gorge. An explainer video breaking down what happened, almost minute by minute, has gone viral, highlighting the extraordinary speed and scale of the disaster.
The video describes a wall of water and debris reaching around 300 feet in height and travelling at an estimated 105 miles per hour, or nearly 170 kmph at one point. Most startlingly, the flood reached a building near the China-Nepal border just 7 minutes and 40 seconds after the glacier collapse was recorded.
