Langtang Valley also known as Lamtang Valley is a Himalayan valley in the mountains of north-central Nepal, known for its trekking routes and natural environment. The Langtang Valley lies in Rasuwa district of the Bagmati Province in Nepal. Situated about 80 kilometres north of the Kathmandu Valley, the valley lies within the Langtang National Park, …Langtang Valley also known as Lamtang Valley is a Himalayan valley in the mountains of north-central Nepal, known for its trekking routes and natural environment. The Langtang Valley lies in Rasuwa district of the Bagmati Province in Nepal. Situated about 80 kilometres north of the Kathmandu Valley, the valley lies within the Langtang National Park, which borders the Tibet Autonomous Region in Southwest China. Prior to the 2015 earthquake, 668 individuals were estimated to be living within the valley.