Our correspondent Anupreeta Das witnessed the rescue operation following the catastrophic flooding in Nepal and Tibet, in which a torrent of debris and water carried away entire villages in just minutes.

A visit near the border with Tibet laid bare the effects of a swollen river’s furious speed. Miles of devastation were left behind in a flash flood that killed more than 300.

The collapse of part of a mountain created a flash flood of a scale and speed no one had imagined, survivors said. Hundreds died, at least, and many more are missing.

© Atul Loke for The New York Times