A deadly surge in Nepal sends a wave of water, ice, mud and rock cascading down the Bhote Koshi River valley, killing more than 150 people and leaving hundreds missing, with reports of at least 34 Australians among the missing. The flow travels over a long distance, affecting a major corridor linking Kathmandu in Nepal and Lhasa in Tibet.
Most outlets attribute the disaster to a sudden failure high in the mountains, described as the collapse of a glacier or ice-and-rock mass. The Hindu and other coverage characterize it as an enormous landslide of ice and rock moving down a mountain pass and gathering up additional water, debris, trees and dirt as it accelerates.
The Conversation adds climate-change context, saying the Himalayas’ glaciers are not immune and that a rapid collapse of a glacier likely triggers the event. While the precise starting mechanism is discussed in slightly different terms across sources, they broadly agree on a cascading sequence: an initial high-altitude collapse followed by a fast, debris-rich flood sweeping through the valley.
