The Crazy Horse Memorial is a monument in progress. Sculptor Korczak Ziolkowski started the mountain carving in 1948. He was asked by Lakota Chief Henry Standing Bear to sculpt this monument to 'show the white man the red man has great heroes too'.
The monument is situated in the Black Hills, a sacred place to Native Americans. It's about 17 miles from Mount Rushmore.
Crazy Horse was a Oglala Lakota war leader who lived from ca. 1840 to 1877. In 1876 he led a war party with Northern Cheyenne and Arapaho against the US Federal Army in the Battle of the Little Bighorn. They defeated Custer's army.