Glacial lake outburst flood/1

Rolwaling Valley, Nepal. The Tsho Rolpa Lake, the largest and most dangerous glacial lake in Nepal is located in the Rolwaling Valley, approximately 30 km southwest of Mt. Everest. It is retained by a natural moraine dam that is unstable and threatens to burst.
If the dam is breached, the resulting flood of approximately 80 million cubic meters of water would cause serious damage for 100 km or more downstream, endangering as many as 6000 lives. It also threatens the construction site of a 60 Megawatt hydroelectric project and other infrastructures.