The park also had some limestone beds that the tribe used as mortars that were then used to grind acorns, hence the name Grinding Rock:
Here's some interesting trivia: the park spells it "Miwok" while the casino owned by the same tribe in nearby Jackson spell it "Miwuk". Another bit of trivia: nearby Jackson is named after Colonel Alden Jackson, no relation to former US President Andrew Jackson.
Speaking of Native Americans and guys named Jackson, I happened to watch The History Channel's episode on Andrew Jackson, who was president during the 1800s. The interesting part of that show was when they discussed Andrew Jackson's relationship with the Native Americans. They're apparently not fans of each other. Jackson forcibly removed them through the Indian Removal Act. The forced migration west came to be known as the Trail of Tears. Many tribes like the Cree and Cherokee view Jackson as a traitor and consider him a war criminal. Many refuse to use the $20 bill and have even considered banning the $20 bill at their casinos because Jackson is on that bill. If you get the chance, try to catch the episode if they air it again on The History Channel.
Technorati tags: Indian Grinding Rock