Long, dark mining tunnel disappearing into the earth, illuminated by dim lights and featuring tracks for transporting ore
Palabras clave
mining,
tunnel,
underground,
dark,
track,
ore,
industry,
transportation,
deep,
earth,
industrial,
metal,
resource,
extraction,
raw,
material,
subterranean,
passage,
shaft,
mine,
darkness,
light,
illuminated,
perspective,
engineering,
infrastructure,
geology,
mineral,
work,
labor,
danger
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