This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
ZitadelleKanone. Kanone in Festungslafette auf dem sdlichen Oberwall Zitadelle Jlich own Christopher MeyerKretschmer Zitadelle Jlich Cannons in Germany
Page 2023 Free-images.com. All images are Public Domain