The nearly 90-foot-tall carved granite face of Crazy Horse is seen in South Dakota's Black Hills in this recent photograph released to Reuters on September 5, 2011. Crazy Horse is a Sioux warrior who helped lead one of the most famous Indian victories over the U.S. Army -- annihilating much of General George Armstrong Custer's Seventh Cavalry at the Battle of Little Bighorn in 1876. When completed, the monument will be the world's largest sculpture, at 641 feet long and 563 feet high.