The area now comprising Sierra County, California has been occupied for over 5,000 years. Ancient petroglyphs, which are scattered from Kyburz Flat to Lacey Meadows and Hawley Lake, bear witness to the existence of early Native Americans in the region. The Miwok tribe lived here, mostly on the west side of the Sierra Nevada Mountains. The Washoe tribal area included the region that is now Eastern Sierra County, including the Sierra Valley.