Red Rock Island is unique in two ways: It's the only privately owned island in San Francisco Bay—currently for sale at under $5 million—and it is shared by three counties, San Francisco, Marin and Contra Costa. But it is only one among four dozen islands in and around the bay.
Red Rock Island, seen from above at right with the Richmond-San Rafael to the north adn below at sunset, is just one of the subjects covered at length--and beautifuly photographed--in James Martin and Michael Lee's The Islands of San Franciso Bay. Copies of the book are available online directly from the authors. For more about the island and its history visit this comprehensive website.
[Photos on this page courtesy of James Martin]