An underground tunnel construction site with scaffolding, machinery, and lighting.
Palabras clave
tunnel,
construction,
underground,
engineering,
infrastructure,
building,
site,
machinery,
scaffolding,
light,
metal,
concrete,
rock,
excavation,
industry,
project,
development,
progress,
future,
transportation,
urban,
city,
transit,
subway,
subway,
railway,
mining,
quarry,
drilling,
work,
working man,
men at work,
equipment,
machine,
industrial