DescriptionHosselkus limestone top Brock-Mountain.jpg
English: Hosselkus limestone at top of Brock Mountain. Shasta County, California. 1902. - ID. Stanton, T. W. 098 - stw00098 - U.S. Geological Survey - Public domain image
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in the United States//commons.wikimedia.org/wiki/File:Hosselkus_limestone_top_Brock-Mountain.jpg
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