Area 51 Nellis Bombing Range Test Site airport (KXTA) on the north of the Area 51 USAF military installation. The lake at elevation is approximately from north to south and from east to west at its widest point. Located within the namesake Groom Lake Valley portion of the Tonopah Basin, the lake is south of Rachel, Nevada. The origin of the Area 51 name is unclear. The most accepted comes from a grid numbering system of the area by the Atomic Energy Commission (AEC); while Area 51 is not part of this system, it is adjacent to Area 15. Another explanation is
Minnesota State Highway 51 Avenue. State Highway 51 serves as a north–south route between Saint Paul, Falcon Heights, Roseville, and Arden Hills in Ramsey County. It is not to be confused with nearby Ramsey County Road 51 (Lexington Avenue / Parkway), which runs parallel to State Highway 51 and ends at the same southern terminus intersection. Highway 51 begins at its intersection with State Highway 5 (W. 7th Street) in the "West Seventh" neighborhood of Saint Paul. 51 follows Montreal Avenue for 10 blocks. 51 then leaves Montreal Avenue and turns north on Snelling Avenue. Highway 51 remains on Snelling Avenue for the remainder