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First Solo Nonstop Circumnavigation Under Sail

#00509 / Transport

World's Highest Extra-long Road Tunnel

Verified

4774m

Mila Mountain Tunnel

Mila Mountain Tunnel in Tibet, China, opened on 26 April 2019. Its bores measure 5,727 and 5,720 m and ordinary road portals stand at 4,752 and 4,774 m; local transport authorities described it as the world's highest completed extra-long road tunnel.

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