This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
blackandwhite monochrome outdoor snow photo border black and white German dugout in bank burns after the retreating Germans fired the ammunition in it. Shows smoke over mounds of earth and pieces of wood and iron. The trees in the background have been stripped by shelling. Photograph taken Puisieux August by Henry Armytage Sanders.