More than 1,300 people are missing and at least 165 have been confirmed dead following a catastrophic flood in the Himalayas, triggered by a large collapse of mud and rock into a river. Authorities in Nepal and China's Tibet region reported the staggering numbers on Thursday, with officials anticipating the death toll will rise as search and rescue operations continue in the affected areas.

Nepalese police confirmed that nearly 500 foreigners were among the 826 people missing in Nepal. The missing tourists hail from over two dozen countries, including significant numbers from India, the United States, Australia, the United Kingdom, and Canada. Across the border in Tibet's Gyirong county, Chinese state broadcaster CCTV reported an additional 558 people missing, including 260 foreign nationals.

Rescuers in Nepal have deployed helicopters to search for survivors and deliver emergency supplies to thousands of people stranded in the rugged, mountainous terrain. This region is a popular route for trekkers and pilgrims traveling between Lhasa in Tibet and Nepal's capital, Kathmandu. Video footage verified by news agencies captured torrents of water and debris sweeping away people at a border crossing in Gyirong, while downstream in Nepal, homes, roads, and power infrastructure were destroyed.

Army spokesperson Raja Ram Basnet stated that helicopters were dropping essential supplies like tents, food, and medicine, provided by neighboring India, into the hardest-hit districts. More than 5,000 army and police personnel are involved in the rescue efforts, having already retrieved 125 people on Thursday, including 20 foreigners.

Initial reports from Nepalese officials suggested that an earthquake might have caused a glacial collapse, initiating the flash floods. However, the U.S. Geological Survey clarified that the seismic event, recorded as a magnitude 4.4 earthquake, was actually the seismic energy released by the sudden collapse of glacial rock and ice, followed by a massive debris flow. This geological event has created a significant disaster in a region known for its challenging terrain and vital tourism and pilgrimage routes.

Chinese authorities have issued warnings that a dammed lake in Gyirong, located upstream from the flooded border crossing, poses an ongoing risk. This situation could severely complicate ongoing rescue efforts, according to CCTV reports. Many individuals affected by the disaster were reportedly on pilgrimages to the sacred Mount Kailash and Lake Mansarovar, high-altitude spiritual sites in Tibet.

Nepal's Prime Minister Balendra Shah has traveled by road to Bidur, one of the most severely impacted districts in Nuwakot, to personally assess the flood situation, as announced by his office on social media. The scale of the disaster highlights the vulnerability of communities in high-altitude regions to natural events, exacerbated by geological instability.

The ongoing rescue operations face significant logistical challenges due to the remote and rugged nature of the affected areas. The international community is mobilizing to provide aid, with countries like India already supplying essential relief materials. The full extent of the human and material losses is still being determined as search efforts continue.