Grinding holes (mortars) at CSUF's quad. Indigenous people of Orange County would grind these holes into rocks to prepare food, usually acorns. Placed there by the Department of Anthropology, they are similar
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Ruinas mortar, with the three rocks where grinding holes are... | Download Scientific Diagram
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Grind of the Navir - passage forced by the sea through rocks of hard porphyry. - NYPL Digital Collections
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Huge 'Grinding Rock' used by Ottawa Indians featured at Union Chapel Museum - The Beacon
Making Paint Step 2: Grinding Stone - Wildland Press
Stone Age herders transported heavy rock tools to grind animal bones, plants and pigment
The Daily Grind: On The Rocks – StanceWorks
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Indian Grinding Rock State Park
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Indian Grinding Rock State Historic Park In Pine Grove, California
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Weathering and Erosion Slowly Gouge, Grind and Polish the Rocks and Then Wash the Debris Off into the Sea Stock Image - Image of cliff, earth: 241149025
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Indian Grinding Rock State Historic Park - A Great Place - Calflora
California Native American Grinding Rock | California State Capitol Museum
