The operation, spearheaded by an international team including Chinese and Nepalese military personnel alongside experts from India, Korea and Australia, is focused on the Trishuli-3A hydropower site. Rescue teams are pumping air into the tunnel network, fearing a critical window to find survivors is closing.
Nepalese Prime Minister Balendra Shah said on Monday that 279 people had been rescued from the hydropower sites so far. The disaster management authority has revised its estimate of the number of missing to 3,925, of whom 592 are foreign nationals. Roughly one in seven missing people are believed to be workers at hydropower plants.
Anushila Bhandari, wife of 33-year-old missing engineer Aurus Bhandari, told BBC Nepali: "I wish we could find him. I wish he would come home." Her words reflect the anguish of families waiting anxiously for news of their loved ones.
The flood disaster, which struck the Nepal-Tibet border region, has devastated communities and infrastructure. The hydropower sites, part of a network of projects along the Trishuli River, became death traps when mud and debris inundated the tunnel systems.