Big rocks piled up and waterlogged, very beautiful. Mountain
Schlüsselwörter
adults only,
business,
chemical,
chemistry,
cleaning,
color image,
computer,
construction industry,
crude oil,
dirty,
electricity,
engineer,
environment,
environmental conservation,
factory,
garbage,
gasoline,
horizontal,
industry,
liquid,
male,
manufacturing,
nature,
no people,
occupation,
one person,
outdoors,
person,
photo,
plant,
pollution,
professional occupation,
recycling,
safety,
sewage,
sewage treatment plant,
sewer,
social issue,
storage tank,
technology,
water
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