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:
CHNB Hinterrhein Quelle am Rheinwaldgletscher Collection Gugelmann GSGUGEBLEULERb.tif Information Creator Johann Ludwig Bleuler Creator Johann Hrlimann Hinterrhein Quelle am Rheinwaldgletscher Hinterrhein Aquatinta koloriert Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEBLEULERb helveticarchives