Mount Rushmore the headquarters for their film "". "" also depicts this location as a secret cover for a fictional gold city. The memorial was also famously used as the location of the climactic chase scene in Alfred Hitchcock's 1959 movie "North by Northwest". Deep Purple's breakthrough album, 1970's "In Rock", parodies the sculpture. On August 11, 1952, the U.S. Post Office issued the Mount Rushmore Memorial commemorative stamp on the 25th anniversary of the dedication of the Mt. Rushmore National Memorial in the Black Hills of South Dakota. On January 2, 1974, a depicting the monument was also issued. Notes Further
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