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In China, the tallest tunnel in the world is built
The construction of the highest-altitude tunnel in the world, with a length of just under 9,5 km, was completed in China. A unique structure located in the mountains of Qilian Shan, connects the provinces of Gansu and Qinghai.
The new tunnel has become part of the high-speed railway line Lanzhou - Urumqi. According to existing plans, the construction of a new railway branch, the length of which will be 1776 kilometers, will be completed by the end of 2014.