Charles E. Rushmore big game. One day, while accompanied by Ted Brockett of Keystone, South Dakota, Rushmore asked the name of the mountain and was told that it was Slaughterhouse Rock. Rushmore joked that his annual treks to the Hills had earned him the right to have the mountain named after himself. "So just for the hell of it," Urbanek claimed, the locals started calling the hill Mount Rushmore. Whatever the precise story, the United States Board of Geographic Names officially recognized the name "Mount Rushmore" in June 1930. Forty years after the initial 1885 naming, Rushmore donated $5000 towards Gutzon Borglum's sculpture
Mount Rushmore that Canada gifted to Custer State Park in 1924, which later escaped. At lower elevations, coniferous trees, mainly the ponderosa pine, surround most of the monument, providing shade from the sun. Other trees include the bur oak, the Black Hills spruce, and the cottonwood. Nine species of shrubs grow near Mount Rushmore. There is also a wide variety of wildflowers, including especially the snapdragon, sunflower, and violet. Towards higher elevations, plant life becomes sparser. However, only approximately five percent of the plant species found in the Black Hills are indigenous to the region. The area receives about of precipitation on