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.
Keywords from Image Description:
Caspar David Friedrich Felsentor im Uttewalder Grund. Artwork Creator Caspar David Friedrich ca sepia cm Museum Folkwang object history credit line nationalparksaechsischeschweiz de html nationalparksaechsischeschweiz de Uttewalder Grund accession number PDold Uttewalder Grund Drawings of Saxony Uttewalde Drawings by Caspar