Red Rock Island is an uninhabited, 5.8-acre island in the San Francisco Bay located just south of the Richmond–San Rafael Bridge. The property is the only privately owned island in San Francisco Bay. The boundaries of three counties – San Francisco, Marin, and Contra Costa – converge on the island. The Contra Costa portion is incorporated inside the city li…
Red Rock Island is an uninhabited, 5.8-acre island in the San Francisco Bay located just south of the Richmond–San Rafael Bridge. The property is the only privately owned island in San Francisco Bay. The boundaries of three counties – San Francisco, Marin, and Contra Costa – converge on the island. The Contra Costa portion is incorporated inside the city limits of Richmond.
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