For ten thousand years or more
the ancestors of the Muwekma Ohlone Indians
They harvested a great diversity of fruits and vegetables.
They managed large tracts of land through selected burning.
here by San Francisco Bay.
The Muwekma Ohlone and other tribes developed religious institutions and a system of social ranking.
Many of their elite were buried with grave wealth, in cemeteries that developed into large earth mounds, commonly known as "shellmounds".