Yichang-Wanzhou railway
Migrant workers with their converted cement bags as luggage in a green skin sleeper.
The railway traverses countless gorges, mountains, hill peaks and unstable geographic structures.
Most sophisticated tunneling techniques were applied in the construction, still with scores of lives lost due to the hardship of this project.
Lots of such bridges
underground water leaked during construction
map of this rail way, it has 159 bridges, 253 tunnels, bridges and tunnels counts as 73% of the 377 km total length
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