Area 51 the base extends further east. After leaving the restricted area, Groom Lake Road descends eastward to the floor of the Tikaboo Valley, passing the dirt-road entrances to several small ranches, before converging with State Route 375, the "Extraterrestrial Highway", south of Rachel. Area 51 shares a border with the Yucca Flat region of the Nevada Test Site, the location of 739 of the 928 nuclear tests conducted by the United States Department of Energy at NTS. The Yucca Mountain nuclear waste repository is southwest of Groom Lake. Groom Lake is a salt flat in Nevada used for runways of the
Minnesota State Highway 51 Minnesota State Highway 51 Minnesota State Highway 51 (MN 51) is a highway in Minnesota, which runs from its intersection with State Highway 5 (W. 7th Street) in Saint Paul and continues north to its northern terminus at its interchange with Interstate 694 / U.S. Highway 10 in Arden Hills. The route is in length. Highway 51 is also known as Snelling Avenue for most of its route. A small section of the route is known as Montreal Avenue in the "West Seventh" and Highland neighborhoods of Saint Paul, and the northern section in Arden Hills is known as Hamline