why did they build mount rushmore
5 th (5) Mount Rushmore Mount Rushmore is a national monument located in the Black Hills of South Dakota. Carved into the side of the large mountain are the faces of four men who were United States presidents.These men were chosen because all four played important roles in American history. th (5) Mount Rushmore Mount Rushmore is a national monument located in the Black Hills of South Dakota. Carved into the side of the large mountain are the faces of four men who were United States presidents. These men were chosen because all four played important roles in American history.