Olumpali is a former settlement in Marin County

Marin County, California

Marin County is a county located in the North San Francisco Bay Area of the U.S. state of California, across the Golden Gate Bridge from San Francisco. As of 2010, the population was 252,409. The county seat is San Rafael and the largest employer is the county government. Marin County is well...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. It was located 6 miles (9.7 km) south of Petaluma

Petaluma, California

Petaluma is a city in Sonoma County, California, in the United States. In the 2010 Census the population was 57,941.Located in Petaluma is the Rancho Petaluma Adobe, a National Historic Landmark. It was built beginning in 1836 by General Mariano Guadalupe Vallejo, then Commandant of the San...

. Its site now lies within the Olompali State Historic Park

Olompali State Historic Park

Olompali State Historic Park is a park on the Marin Peninsula, north of Novato, California, USA, which overlooks the Petaluma River and San Pablo Bay. In 1977, the State of California purchased Rancho Olompali and made it into a state historical park. The foundations of two prehistoric adobe...

.

The name comes from the Coast Miwok

Coast Miwok

The Coast Miwok were the second largest group of Miwok Native American people. The Coast Miwok inhabited the general area of modern Marin County and southern Sonoma County in Northern California, from the Golden Gate north to Duncans Point and eastward to Sonoma Creek...

 language and likely means "southern village" or "southern people". The Coast Miwok had inhabited a site within the State Historic Park continuously from as early as 6000 BCE. Olompali had been a main center in 1200, and might have been the largest native village in Marin County.