the black smoke comes from chimney of a house against gray sky, heating with coal in winter. environmental problem of smog in Beskid Mountains, Zywiec, Krakow. heating system needs to be upgraded. Poster #333281278
the black smoke comes from chimney of a house against gray sky, heating with coal in winter. environmental problem of smog in Beskid Mountains, Zywiec, Krakow. heating system needs to be upgraded. Poster #333281278
