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.
Vulkanische Eifel. Cover of travel guide book entitled Die Vulkanische Eifel published by Albert Goldschmidt of Berlin europeana eu html author PDOld book covers Griebens ReiseBibliothek
Page 2023 Free-images.com. All images are Public Domain