World’s highest highway tunnel opens to traffic in Tibet byAgency Report April 26, 2019 Over 10 technological breakthroughs have been made in the course of the construction.
![Tunnel used to illustrate the story. [PHOTO CREDIT: East Of West LA]](https://i0.wp.com/media.premiumtimesng.com/wp-content/files/2019/04/Man-In-Tunnel.jpg?fit=1422%2C820&ssl=1)
