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.
Karlsruhe Hafensperrtor. Karlsruhe Harbour Floodgate own own photo Kucharek March UTC public Ports and harbours in Karlsruhe Flood protection in BadenWrttemberg Tidal barriers
Page 2023 Free-images.com. All images are Public Domain