Anderson Marsh's archaeological sites hold clues to the lives of the Pomo. Some sites are over 10,000 years old, making them among the oldest in California. The park protects several habitats including freshwater marsh, oak woodland, grasslands, and riparian woodland. If you like to hike, you can take advantage of miles of trails. Trailside signs offer insight into understanding the native plants and animals of the park. The park is also popular for bird watching, hiking and picnicking. Explore the past at the historic Anderson Ranch, with its nineteenth century structures.