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Many families in Marin and the North Bay have fond memories of visiting the popular pumpkin patch at Cardoza Ranch outside Petaluma. In 2005, the Sonoma County Agricultural Preservation & Open Space District and the Sonoma County Regional Parks Department acquired Cardoza Ranch, also known as Tolay Lake Ranch, turning its 1,737 acres of farmland into a county park. Tolay Lake Ranch is a unique spot, with a freshwater lake, wetlands, diverse wildlife, and 8,000 years human habitation with extensive archaeological and historical sites. Tolay Lake Regional Park is currently under development and access is restricted, although the public can now make use of the park through a day-use permit program.