Authorities say 13 workers are trapped inside a collapsed hydropower tunnel in India. Toxic gas was slowing rescuers Wednesday at the site in the northeastern state of Sikkim in the Himalayas.

Twenty-seven workers are trapped inside a Sikkim tunnel after a landslide blocked its entrance. Rescue operations are complicated by a suspected gas leak, affecting personnel.…

The tunnel is a part of the National Hydroelectric Power Corporation’s (NHPC) Teesta Stage VI hydroelectric power project | India News