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.
Map with the Danevirke from . title Map with the Danevirke from Trkp Danevirke brzolsval bl own photo by Szilas in the Danevirke Museum Szilas Commonist Cczero Maps of Dannevirke Danewerk Museum
Page 2023 Free-images.com. All images are Public Domain