Hei MuJakob SteinerUniversity of GrazBBC Verify

Drone photographer in Nepal accidentally captures devastating mudslide from glacial collapse; death toll surpasses 950 as 4,400 remain missing

A drone photographer in Nepal inadvertently recorded a catastrophic mudslide triggered by a glacial collapse, resulting in over 950 deaths and leaving 4,400 individuals missing. The incident, which occurred near Langtang Lirung, also trapped 900 workers in damaged hydropower projects, complicating rescue efforts.

petapixel.com31 August 2026 · 18:28 UTC
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A drone photographer in Nepal captured a devastating mudslide caused by a glacial collapse near Langtang Lirung, a peak rising 24,000 feet (7,000 meters). The incident has resulted in a death toll exceeding 950, with 4,400 individuals still missing.141011

The photographer, Hei Mu, stated, “I never imagined those loud noises behind me could be an ice avalanche and mudslide, nor did I expect such a huge impact,” emphasizing his focus on filming rather than the sounds of disaster. His footage, shared on the Chinese platform RedNote, shows the initial moments of the collapse, with small plumes of ice and rock cascading down the mountain.25

The glacial collapse released 500 million tons of rock and ice, sending debris sliding 5,000 feet (1,500 meters) down the north face of Langtang. The aftermath has left 900 workers trapped in 12 hydropower projects, with 500 of them stuck in tunnels large enough for trucks. Jakob Steiner, a geoscientist, noted, “They have managed to get oxygen to some of those stuck inside and are trying to rescue them now. It’s a race for time, though, as people need food and water.”8912131415

As rescue efforts continue, the situation remains dire, with the region grappling with the aftermath of this natural disaster.

Key Insight
“The collapse sent 500 million tons of rock and ice down Langtang's north face, and BBC Verify confirmed the footage matches the flood water's path down the Trishuli River. At least 900 workers are trapped in 12 damaged hydropower projects, with 500 stuck in tunnels, as rescuers race against time.”
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“A drone photographer in Nepal unwittingly captured the horrific mudslide caused by a glacial collapse high in the Himalayas.”
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