Workers work at the construction site of the Galashan Tunnel in Lhasa, Southwest China’s Tibet autonomous region, April 7, 2018. The 4,373-km-long tunnel, about 3,600 meters of altitude, is part of the Lhasa to Nyingchi railway. [Photo/Xinhua]
Workers celebrate the holing-through at the construction site of the Galashan Tunnel in Lhasa, Southwest China’s Tibet autonomous region, April 7, 2018. [Photo/Xinhua]
Workers detonate at the construction site of the Galashan Tunnel in Lhasa, Southwest China’s Tibet autonomous region, April 7, 2018. [Photo/Xinhua]
Workers celebrate the holing-through at the construction site of the Galashan Tunnel in Lhasa, Southwest China’s Tibet autonomous region, April 7, 2018. [Photo/Xinhua]
