Rescue teams in Nepal are searching for five people still missing after a flash flood tore through a river valley in the country's north, an area popular with trekkers walking the Manaslu circuit. Roughly 150 foreign trekkers were in the affected zone when the flood hit, according to the Trekking Agencies' Association of Nepal, whose president Sagar Pandey said the body was working with authorities to get stranded travellers out because roads have been cut.

The disaster appears to have begun with a landslide that dammed a river upstream. When the natural barrier burst, a wall of water surged downstream on Sunday morning, smashing through villages, damaging hydropower plants and forcing residents to flee. One local, Indra Bahadur Gurung, described screaming to get people out moments before the flood crashed through the settlement. Aid deliveries to affected communities are under way, and Prime Minister Balendra Shah urged residents to stay in safe locations and avoid risky roads and bridges.

This is not an isolated event in a brutal year for Nepal's mountain regions. The country is still reeling from catastrophic floods on August 26, triggered by a glacial collapse, that killed more than 1,400 people and left over 5,000 missing. Heavy rain in late September set off further floods and landslides that killed at least 21 people. Shah told the United Nations last month that the August disaster 'was a warning to the world' on climate change.

Experts say the latest flood exposes gaps in how these hazards are detected. Basanta Raj Adhikari of Tribhuvan University's Centre for Disaster Studies argues that traditional river-level warning systems are no longer enough, and that satellite imagery and seismometers should be used to catch landslide-dammed rivers earlier. The Kathmandu-based International Centre for Integrated Mountain Development said the event underlines the wide range of hazards that can generate destructive floods in Himalayan river systems.

For trekkers, the practical takeaway is straightforward: the Manaslu region — and Himalayan valleys generally — carry real, fast-moving risk this season, even on well-trodden routes. Anyone with a trek booked should check with their agency about road access, evacuation plans and current conditions before setting out, follow local advice on river crossings and bridges, and be prepared for itinerary changes if trails or roads are damaged. Flash floods and landslides can arrive with minutes of warning, so knowing your route's escape options matters as much as packing lists and permits.

The story also signals a wider shift for Himalayan travel: with climate-driven disasters increasing in frequency, travellers may want to build flexibility into trekking plans, consider travel insurance that covers evacuation and trip interruption, and favour operators with solid safety protocols and local monitoring. Nepal's trekking industry remains open and eager for visitors, but this season rewards caution and current information over fixed plans.