Historic

Indian Grinding Rock State Historic Park

Amador County, CA

Coordinate verified

California State Historic Park (Chaw'se) in the Sierra foothills near Pine Grove preserving North America's largest collection of bedrock mortars—about 1,185 mortar holes in marbleized limestone—used by Northern Sierra Miwok people for acorn processing. Includes a ceremonial roundhouse still used by Native Americans, reconstructed bark houses, and the Chaw'se Regional Indian Museum. Distinct from the gold-rush towns of Volcano and Fiddletown.

Field facts

RegionAmador County, CA
Coordinates38.4256, -120.6400
CountyAmador
ManagerCalifornia State Parks
Also known asChaw'se
FeatureBedrock mortar complex + Miwok cultural park

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