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.
Maps of Mars by Schiaparelli . Giovanni Schiaparelli's maps of Mars Top General map of Mars Bottom showing the twinning of Martian canals by observations from and blogspot html bp blogspot file Creator Giovanni Schiaparelli PDold File Mars twin canals by Schiaparelli Bottom
Page 2023 Free-images.com. All images are Public Domain