Watch: How the collapse of a glacier caused such devastation

At least 270 people have died in the massive flash floods, while more than 800 others are missing.

​Watch: How the collapse of a glacier caused such devastation At least 270 people have died in the massive flash floods, while more than 800 others are missing. At least 270 people have died in the massive flash floods, while more than 800 others are missing.