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The 22.13-kilometer-long Tianshan-Shengli Tunnel, the world's longest expressway tunnel, officially opened to motorists on Friday.
Traversing the central Tianshan Mountains in northwest China's Xinjiang Uygur Autonomous Region, the tunnel slashes what was once a several-hour mountain drive to just 20 minutes.
The 22.13-kilometer-long Tianshan-Shengli Tunnel, the world's longest expressway tunnel, officially opened to motorists on Friday.
Traversing the central Tianshan Mountains in northwest China's Xinjiang Uygur Autonomous Region, the tunnel slashes what was once a several-hour mountain drive to just 20 minutes.