Underground mine. Underground road for transport. The walls and ceiling of the tunnel are reinforced with anchors and metal mesh
Palabras clave
mine,
background,
metal,
mining,
industry,
tunnel,
stone,
cable,
equipment,
steel,
underground,
mesh,
industrial,
mineral,
ground,
rock,
anchor,
ore,
dark,
reinforced,
work,
iron,
support,
road,
cave,
nobody,
geology,
light,
wall,
ceiling,
drive,
modern,
composite,
danger,
exploitation,
hall,
hole,
hard,
mountain
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