A Brazilian illegal miner rests in front of a hole made in search of gold at a makeshift camp for illegal mining near Tumeremo in Venezuela's southern Bolivar state July 13, 2010. Similar to the gold rush to California in the middle of the 19th century, the zone known as the Shield of Guyana that encompasses southern Venezuela, eastern Colombia, northern Brazil and all of Guyana, Surinam and French Guyana has turned into a center for gold mining. Picture taken July 13, 2010. REUTERS/Carlos Garcia Rawlins (VENEZUELA - Tags: BUSINESS SOCIETY ENVIRONMENT)