India, Aug. 27 -- Catastrophic flash floods and landslides have struck the region along the Nepal-Tibet border, leaving more than 150 people dead and hundreds missing. Emergency crews are continuing search-and-rescue operations across affected areas. Meanwhile, dramatic eyewitness footage has emerged showing a construction crew fleeing for their lives as a violent flood surge tears through their site. The worker who recorded the terrifying moment said he was later rescued by helicopter.

The scary scene shows workers in safety helmets and orange high-visibility vests frantically running away from a riverbed as a massive cloud of dust and spray forms upstream. Moments later, a muddy and violent torrent sweeps down the river corridor as the...