Indian Grinding Rock State Historic Park
Lonely Planet review
To get perspective on the region's history, take Hwy 88 north toward Pine Grove to the Indian Grinding Rock State Historic Park , which is sacred ground for the local Miwok Indians. The magnificent 'grinding rock' is covered with ancient petroglyphs and mortar holes called chaw'Ses . Camping in reconstructed bark houses, called U'macha'tam'ma ', provides a more tactile Miwok experience than any museum could.