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:
Page cruiseofcorwin. en GRANITE ROCKS ON THE SOUTH SIDE OF SAINT LAWRENCE ISLAND SHOWING EFFECTS OF OVERSWEEPING ACTION OF ICESHEET archive org John Muir PDold PDArt PDUS Uploaded with John Muir Saint Lawrence Island Geology of Alaska Cruise of the Corwin Volcanological diagrams in English Volcanological diagrams Granite