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
Occupation of Alcatraz Movement noted from their visit to the occupation that the demonstration garnered national attention, while those involved faced no punitive action. When AIM members seized the Mayflower II on Thanksgiving, 1970, the Occupation of Alcatraz was noted as "the symbol of a newly awakened desire among Indians for unity and authority in a white world." The occupation of Alcatraz Island served as a strong symbol and uniting force for indigenous peoples everywhere because of the importance the island held in their ancestors' lives. Indians traveled to Alcatraz about 10,000 years before the Europeans even entered the Bay area. Over the