The Ohlone inhabited fixed village locations, moving temporarily to gather seasonal foodstuffs like acorns and berries. The Ohlone people lived in Northern California from the northern tip of the San Francisco Peninsula down to northern region of Big Sur, and from the Pacific Ocean in the west to the Diablo Range in the east. Their vast region included the San Francisco Peninsula, Santa Clara Valley, Santa Cruz Mountains, Monterey Bay area, as well as present-day Alameda County, Contra Costa County and the Salinas Valley. Prior to Spanish contact, the Ohlone formed a complex association of approximately 50 different "nations or tribes" with about 50 to 500 members each, with an average of 200. Over 50 distinct Ohlone tribes and villages have been recorded. The Ohlone villages interacted through trade, intermarriage and ceremonial events, as well as some conflict. Cultural arts included basket-weaving skills, seasonal ceremonial dancing events, female tattoos, ear and nose piercings, and other ornamentation.