San Francisco Bay is the artificial and flat Treasure Island, site of the 1939 Golden Gate International Exposition. From the Second World War until the 1990s, both islands served as military bases and are now being redeveloped. Isolated in the center of the Bay is Alcatraz, the site of the famous federal penitentiary. The federal prison on Alcatraz Island no longer functions, but the complex is a popular tourist site. Despite its name, Mare Island in the northern part of the bay is a peninsula rather than an island. San Francisco Bay is thought to represent a down-warping of the Earth's crust between
Alcatraz coup of the Coup to further sanctions. Alcatraz coup The Alcatraz coup is an illegal method of learning about the opponents' cards in contract bridge. It is not a true coup. The word is being used facetiously based on the name of the former Alcatraz penitentiary. The "coup" consists of a deliberate revoke by declarer, causing the next player to reveal whether he holds the key card whose location is sought. The declarer then corrects the revoke (which is allowed without penalty if done soon enough) and the defender may change his play, but declarer now knows about the key card