Nepal Flood Crisis: Rescue Teams Race Against Time to Reach Hundreds Trapped in Debris-Filled Tunnels

Rescue teams in Nepal are pressing forward with urgent search operations for thousands of missing individuals, marking five days since catastrophic flash floods plunged the Himalayan nation into a severe humanitarian crisis. Hundreds of the missing are feared trapped inside hydropower tunnels choked with thick mud and rock debris following the floods, which originated in Tibet after a sudden glacial collapse last week. The disaster has claimed more than 900 lives, with nearly 5,000 people reported missing across both Nepal and Tibet.

The disaster was triggered on August 26 when a massive section of a glacier near the Langtang Lirung peak detached, plunging roughly 1,200 metres from a height of 5,200 metres. Gathering immense quantities of rock and debris along its descent, the ice-rich avalanche slammed into the Lende River, sending a destructive surge southward through Nepal's Rasuwa, Nuwakot, and Dhading districts.

In response to the emergency, Nepali Prime Minister Balendra Shah announced that approximately 21,000 security personnel have been deployed alongside civilian workers and volunteers. Although initially declining foreign assistance, Nepal has since welcomed international experts from China and India to bolster rescue efforts.

China has deployed over 2,100 rescue workers, providing at least 220 million yuan ($33m) in financial support, airdropping vital supplies, and utilizing life-detection equipment such as thermal cameras and sound detectors. Chinese President Xi Jinping noted that Beijing is actively searching for missing nationals, relocating affected residents, and working to prevent secondary disasters. Meanwhile, India has dispatched 18 military officers specializing in tunnel rescue, six forensic DNA identification teams, four tranches of humanitarian aid, and Bailey bridges to reconnect isolated regions. Additional aid has poured in from the United Nations, the Red Cross Federation, Australia, South Korea, and the United States.

A primary focus of the rescue operations centers on a series of hydropower project tunnels along the swollen rivers. According to Nepal's National Disaster Risk Reduction and Management Authority, 933 workers stationed at these facilities remain missing. Spokesperson Raja Ram Basnet noted that heavy debris deposits are creating immense challenges. Rescue efforts have concentrated heavily on the Trishuli 3A and 3B hydropower projects, where teams have utilized drilling equipment and cameras to pump air into mud-swamped tunnels. Nearly 300 trapped workers have been successfully rescued so far, though recent efforts have faced setbacks.

As of Monday, Nepali authorities confirmed a death toll of 903 with 4,247 missing. In Tibet's Gyirong County, Chinese officials reported 16 deaths and 546 missing, including 261 foreign nationals from 23 countries.

Adverse weather and rugged terrain continue to severely disrupt operations. Overnight rainfall and rising river levels have repeatedly flooded excavation sites. Furthermore, barrier lakes formed during the disaster—one of which began overflowing on Friday—have posed renewed threats to downstream workers and displaced survivors, prompting temporary halts to rescue operations. Prime Minister Shah described the event as an unprecedented natural disaster, emphasizing the administration's unwavering determination to save citizen lives despite the extreme risks.