Security camera footage of a massive flood hitting Gyirong Port at the border of China and Nepal on August 26. Wikipedia

Five days after a calamitous flood washed through Rasuwa, Nepal, the death toll continues to climb. Authorities said Monday that 903 people have been confirmed dead, while another 4,247 are missing, as the country reels from a disaster that experts say may be linked to the melting of glacial ice.

Officials believe the collapse of a glacier on Langtang Lirung peak sent an avalanche of ice and rock careening into a valley below, where it blocked the flow of the Trishuli River. When the rock barrier finally gave way, they say, it unleashed a rush of water and mud several stories high.…