Mount Rushmore a humid continental climate ("Dwb" in the Köppen climate classification). It is inside a USDA Plant Hardiness Zone of 5a, meaning certain plant life in the area can withstand a low temperature of no less than . The two wettest months of the year are May and June. Orographic lift causes brief but strong afternoon thunderstorms during the summer. Tourism is South Dakota's second-largest industry, and Mount Rushmore is the state's top tourist attraction. In 2012, 2,185,447 people visited the park. In the 1950s and 1960s, Sioux Benjamin Black Elk (son of medicine man Black Elk) was the "Fifth Face
Mount Rushmore the American Indian leader as a response to Mount Rushmore. Upon completion, it will be larger than Mount Rushmore and has the support of Lakota chiefs. The Crazy Horse Memorial Foundation has rejected offers of federal funds, but it is the subject of controversy, even among Indian tribes. Because of its fame as a monument, Mount Rushmore has been depicted in multiple places in popular culture. It is often depicted as a cover for a secret location; shown with faces removed or modified (as in "Superman II"), or added; or parodied. Trey Parker and Matt Stone used the location as