thick smoke rises from the chimney-stalk. behind the chimneys, a forest is visible.

air asphyxiating atmosphere away bad caustic chemistry chimney chimneys chimneystack chimneystalk combustion damage disturb ecology ecosystem emission factory forest frost funnel gray harm harmful health nature panorama pillar pipe pipes plant poisonous pollution problem production puffs rises rising river riverbank smell smelling smells smoke smokestack snow spoil stack stackfurnace stand steam thick threat throw violation visible white winter