Railway construction inside a large underground tunnel. Construction of a subway or underground railway.
Palabras clave
tunnel,
subway,
underground,
transportation,
industry,
engineering,
safety,
occupation,
motion,
construction site,
engineer,
journey,
construction,
pipeline,
canal,
sewage,
railway,
highway,
road,
shortcut,
dangerous,
deep,
mine,
speed,
helmet,
transport,
construction worker,
industrial,
technology,
concrete,
light,
urban,
futuristic,
standing,
track,
station,
rail,
curve,
fast,
infrastructure,
planning