Rushmore Cave Rushmore Cave Rushmore Cave is the closest show cave to Mount Rushmore National Memorial in the United States. It contains a wide variety of natural formations. It is the ninth longest cave in South Dakota. It measures a distance of . It was discovered in 1876 when a log flume that supplied water to mining operations in town of Hayward broke and spilled onto the side of the hill. As the water flowed down the hill it started flowing into a small hole in the hillside. The local miners who went up to fix the flume noticed this abnormality and
Howard Rushmore Rushmore would dine with "his wife (Frances), Roy Cohn and his girl-friend." On November 27, 1949, Rushmore published in the "Journal-American" allegations of communist infiltration of US naval vessels. Though the facts of the article were invented by Rushmore, by coincidence the FBI was conducting its own investigation on the same matter. Initially, J. Edgar Hoover thought that Rushmore had access to genuine intelligence. Hoover then had Rushmore's telephone tapped. Later in Olympia, Washington, Rushmore testified before the Canwell Committee, a state committee to investigate subversive activities at the University of Washington. Rushmore switched the subject to Washington, D.C. He