Rescue teams in Nepal are racing to reach dozens of workers believed trapped inside hydropower tunnels, a week after a Himalayan flood that killed more than 1,200 and left over 4,200 missing.

Officials warn tunnel recovery could take months due to mud, instability, and ongoing safety concerns that hinder access.

Specialist rescue teams from India, China, and the United States are assisting, using pipes to deliver oxygen and probing dry chambers for potential survivors.

A video segment dated with a timestamp of 15:55 and lasting five minutes is presented by Welt (Axel Springer).

The disaster is described as one of the major events in recent history, with ongoing warnings to monitor and sustain assistance efforts.

The situation is dramatic, with destroyed roads hampering emergency response and aid delivery.

Disaster authorities say health camps with doctors and stocked medicines have been established at relief centers, emphasizing hygiene and sanitation to reduce disease risk.

Health centers with medical staff and supplies are in place at shelters, with a focus on sanitation to curb disease risk.

On-site updates from Kathmandu note that the full extent of damage will become clearer in the coming days.

Breathing air is a major concern, with suffocation risks rising if air access remains limited after several days.

Forecasts indicate heavy showers and storms across six provinces, with possible snowfall in hills and moderate rain in some Terai areas.

Access to affected areas is hindered by a narrow, mud-covered track that can be blocked after landslides, delaying relief convoys.