A large basalt boulder bears the marks of metates, food grinding stones, Badger Springs Trail, Agua Fria National Monument, AZ

- Image ID: BKFPGF
A large basalt boulder bears the marks of metates, food grinding stones, Badger Springs Trail, Agua Fria National Stock Photo
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A large basalt boulder bears the marks of metates, food grinding stones, Badger Springs Trail, Agua Fria National Monument, AZ
Kerrick James / Alamy Stock Photo
Image ID: BKFPGF
Location: Arizona