Mt Trola Tunnel is at Mt Trola which is in between Garzeand Derge. Its altitude is 6168 meters, it makes the drive from Kanze to Derge over 9 hours for this 220 kilometers; it has slowed down the development of Derge and also make the connection to the Central Tibet difficult;
In 2012, the construction of building this tunnel began; in 2016, the whole tunnel is built through; the rest of the construction is predicted to be completed in this August, and this tunnel will be in used since then; it will only take 5 – 10 minutes to cross through this tunnel, and shorten the drive between Kanze and Derge to 4-5 hours, it shall tremendously improve the communication between Derge and out-world and also make the drive into Tibet more convenience and easy;
Tunnel data:
its length: 8955 meters; the main tunnel is 7079 meters long; the both entrance altitude are 4378 meters above sea level; it is thought to be for the moment the highest road tunnel on this plannet
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