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:
South African Geology Schwarz Fig . en Figure from South African Geology Schwarz Fig Roches Moutonnes showing the surfaces rounded and polished on the side the ice sheet moved from stoss side and rough'and irregular on the lee side Page org SouthAfricanGeologySchwarz djvu Schwarz Ernest Hubert Lewis other versions PDold