This Age of Steam Expansion expands the game to the Bay Area of California.The Bay Area is a full color paper expansion and depicts the entire San Francisco bay area and incorporates some new rules and features to add flavor to the proceedings such as two bridges across the bay and the city of San Jose, the first triple hex city in Age of Steam which always receives goods during production.Age of Steam - the Bay Area is another fan produced expansion to the Winsome / Warfrog game Age of Steam. This map has been replaced by the Age of Steam Expansion - 1830's Pennsylvania / Northern California and is out of print. - BoardGameGeek