It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
This image was acquired from
Keywords from Image Description:
industry sunrise clouds fog smog factory ruhr area old architecture mining carbon current environment smoke rest loneliness black and white environmental protection pollution chimney exhaust cross nature and environment evening sky disposal kamp athens power plant air sky duisburg rhine industrial plant steam toxic hope germany
Page 2017 Free-images.com. All images are Public Domain