![]() Today it is used as an open training range for the US Air Force.Īccording to the CIA, the name Area 51 comes from its map designation. The US government’s official name for Area 51 is the Nevada Test and Training Range, which is a unit of the Nellis Air Force Base. Example: ESW denotes the east half of the southwest quarter of a section, containing 80 acres.Here’s a look at Area 51, a highly classified United States Air Force facility located at Groom Lake in southern Nevada. Sometimes, several Aliquot Parts are required to describe a parcel of land accurately. Quarters of a Section (or subdivision thereof) are represented as NW, SW, NE, and SE (such as the northwest quarter of section 5). ![]() Halves of a Section (or subdivision thereof) are represented as N, S, E, and W (such as the north half of section 5). Aliquot Parts were used to representing the exact subdivision of each such section of land. Aliquot Parts - Sections were then further subdivided into smaller pieces, such as halves and quarters, while still (generally) keeping the land in a square.Section Number - Townships were then further broken down into thirty-six sections of 640 acres each (one square mile) called sections, which were numbered with reference to the baseline and meridian line.Example: Township 3 North, Range 9 West, 5th Principal Meridian identifies a specific township that is 3 tiers north from the baseline and 9 tiers west (Range) of the 5th Principal Meridian. A Township is identified by this relationship to a base line and a principal meridian. The east/west identification is known as the Range. Townships are then numbered from the base line north and south and then from the meridian line east and west. Township and Range - Townships, a major subdivision of public lands under the rectangular survey system, measure approximately six miles on a side (thirty-six square miles).
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