Nearly 1,500 people including at least 800 foreigners are missing across Nepal and China’s Tibet, authorities said on Thursday, after a glacial wall of mud and rock collapsed into a Himalayan ‌river, sending catastrophic floods through towns and valleys.Alpine Eco Trek, which offers guided tours and expeditions in Nepal, told the Press Association that two Irish nationals were among those missing from its tour groups.Police said they expected the death toll to rise beyond 165. “This will go up, as we have resumed the search and more bodies are expected to be recovered,” a police spokesperson told Reuters. Rescuers are struggling to reach communities cut off by floods.Rescuers in Nepal used helicopters to search for survivors and drop emergency supplies to thousands cut off after Wednesday’s disaster swept a rugged mountainous region thronged by trekkers and pilgrims linking Lhasa in Tibet with the Nepalese capital of Kathmandu. ​Almost 600 foreigners were among 826 people missing in Nepal, police and tourism officials said.Among the missing tourists from more than two dozen countries, 177 were from India, 63 were from the United States, 34 from Australia, 33 from Britain and 25 from Canada.The tally of missing in Tibet’s Gyirong county was 558, Chinese state broadcaster ​CCTV said on Thursday, including 260 foreign nationals.Verified videos showed crushing masses of water and debris sweeping away dozens of people at a border crossing in Gyirong, with homes, roads and power projects washed away further downstream in Nepal.“It was a huge gush of mud coming straight towards ⁠us,” said Keshav Prasad Baral (68), a survivor being treated in hospital.[ What triggered catastrophic flood on the Nepal-Tibet border?Opens in new window ][ Two Irish among hundreds of tourists missing after deadly flash flood on Nepal-Tibet borderOpens in new window ]“As it got closer, it kept rising higher and higher. When I saw it enter our home, I tried to grab my ‌wife’s ‌hand ​and take her to the terrace. But she was swept away by the mud.”A helicopter ferried him to safety four hours later. “My wife is still somewhere beneath the mud,” he added. “She’s gone.” Another survivor said he saved himself by clinging to a mango tree as he watched the house where he had been working disappear.In ⁠the hardest-hit districts, helicopters are dropping tents, food and other emergency supplies provided by neighbouring India, ​said a spokesperson for Nepal’s army. More than 5,000 army and police rescue personnel were ​mobilised to look for survivors and find bodies. Early reports from Nepali officials suggested an earthquake in the area could have caused the lower part of a glacier to collapse and trigger the floods.GRAPHIC WARNING: This video contains sensitive footage that may disturb some viewers. A massive flash flood in the Himalayan border areas of Nepal and ‌China's Tibet washed away villages while damaging roads, bridges and power projects in a region bordering Tibet, authorities… pic.twitter.com/risp0biV2w— Reuters (@Reuters) August 26, 2026