40 years ago, Marin County’s forward thinking citizens voted to created the county’s own system of protected public open space. Today, Marin County Parks offers for public use and enjoyment nearly 20,000 acres of regional and community parks, open space preserves, and trails. These lands provide us with clean air and water, outstanding beauty and recreational opportunities for people of all ages and abilities. They educate, inspire and engage the people of Marin in the shared commitment to land protection and stewardship. Marin Brewing Company is committed supporter of our local parks and preserves and has partnered with Marin County Parks to launch a limited edition Preservation Ale. 5.0% alcohol by volume.