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 Federal Penitentiary prisons in the country, especially the food, and many volunteered to come to Alcatraz. On December 3, 1940, Henri Young murdered fellow inmate Rufus McCain by running downstairs from the furniture shop to the tailor's shop where McCain worked and violently stabbing McCain in the neck; McCain died five hours later. Young had been sentenced to Alcatraz for murder in 1933, and was involved in an escape attempt at Alcatraz during which the famous gangster Doc Barker was shot to death. He spent nearly 22 months in solitary confinement as a result, but was eventually permitted to work in the