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
Wyoming Highway 51 Interstate 90 which carries US 14/US 16. WYO 51 comes to an end at just under 25 miles at US 14/US 16/I-90 BUS. WYO 51 is signed as a secondary state highway, but not marked from the Interstate 90 interchanges like most secondary state highway frontage roads. Wyoming Highway 51 is the original alignment of US Route 14 and US Route 16. With the construction of Interstate 90, US 14 and US 16 were realigned onto that highway. Wyoming Highway 51 Wyoming Highway 51 is a long east-west Wyoming state highway located in Campbell and Crook Counties, between Gillette and