The memorial is being carved out of Thunderhead Mountain in the Black Hills. When completed it will be 641' long and 563' high. It's definitely one great big chunk of rock! Avenue of the Chiefs gives a good perspective.
The Mountain Museum includes the Sculptor's Log Studio Home and is adjacent to the Sculptor's Workshop--and they're even worse. Obviously Korczak needed something to do during the cold South Dakota winters, so there are other pieces he's done in a more moderate size. The bronze is of Chief Henry Standing Bear.
There's a 1/34th scale model outside, which is pretty cool. (I have no idea why he decided on 1:34. I'm not even going to think about playing around with the math.) Korczak depicted Crazy Horse pointing over his horse's head because he was supposed to have said, "My lands are where my dead lie buried."
There are other sculptures near the exit. This one is called "Fighting Stallions".