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
Georgia State Route 51 Creek. In 1968, it was established and hard surfaced from the SR 51 mainline north and east-northeast to the shore of the "Hartwell Reservoir". In 1983, it was decommissioned. Georgia State Route 51 State Route 51 (SR 51) is a state highway that travels west-to-east through portions of Hall, Banks, Franklin, and Hart counties in the northeastern part of the U.S. state of Georgia. The highway connects Lula with Lake Hartwell, via Homer, Carnesville, and Hartwell. SR 51 begins at an intersection with SR 52 in Lula, in Hall County. It travels northeast and curves to the southeast to cross