Workers celebrate holing-through of Galashan Tunnel in Lhasa, SW China's Tibet
Xinhua,April 09, 2018
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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]
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