Indian Grinding Rock State Historic Park is a California state park located in Pine Grove, Amador County, California. The park is dedicated to preserving and interpreting the rich Native American heritage of the area, particularly the Miwok people who inhabited the region for thousands of years.
Pine Grove is a small unincorporated community located in Amador County, California, in the United States. Pine Grove is situated in the Sierra Nevada foothills of Northern California. It is located approximately 45 miles southeast of Sacramento, the state capital. The population was 2,219 at the 2010 census.