Left-line of Guigala Tunnel on S5 expressway drilled through in Tibet(1/4)

Drone photo shows the S5 expressway connecting Lhasa and Tsetang in Zhanang County of Shannan, southwest China's Tibet Autonomous Region, March 28, 2023. (Photo: China News Service/Jiang Feibo)

The left line of Guigala Tunnel was drilled through on Monday.

A ceremony is held to celebrate the drill-through of the left line tunnel on S5 expressway connecting Lhasa and Tsetang in southwest China's Tibet Autonomous Region, March 28, 2023. (Photo: China News Service/Jiang Feibo)

Drone photo shows the S5 expressway connecting Lhasa and Tsetang in Zhanang County of Shannan, southwest China's Tibet Autonomous Region, March 28, 2023. (Photo: China News Service/Jiang Feibo)

Drone photo shows the Dagze section of S5 expressway connecting Lhasa and Tsetang in Lhasa, southwest China's Tibet Autonomous Region, March 28, 2023. (Photo: China News Service/Jiang Feibo)