U.S. Route 16A The route passes through Keystone, South Dakota; Mount Rushmore National Memorial; The Norbeck Wildlife Management Area and Black Elk Wilderness within the Black Hills National Forest; and Custer State Park (including State Game Lodge and Legion Lake); before rejoining the parent highway. US 16A is famous for its scenic, one-lane tunnels aligned to frame the faces on Mount Rushmore, its "pigtail bridges", and its sections of divided highway but with single (and narrow) lanes on each roadway. It is the only route which can be used to drive through Custer State Park without having to pay an entrance fee for
Mount Rushmore in popular culture in the course of screenwriting, as Hitchcock and scriptwriter Ernest Lehman were struggling to develop an idea. As Lehman would later recall, Hitchcock "murmured wistfully, 'I always wanted to do a chase across the faces of Mount Rushmore.'" While writing the script, Lehman took a trip to Mount Rushmore to scale the faces of the famous monument; he only got halfway to the top, and bought a camera to give to the park ranger to photograph the famous monument for him. However, the scene was not actually filmed at the monument, since permission to shoot an attempted killing on the