Area 51 between Area 51 and Lockheed's Burbank, California offices. To preserve secrecy, personnel flew to Nevada on Monday mornings and returned to California on Friday evenings. Project OXCART established in August 1959 for "antiradar studies, aerodynamic structural tests, and engineering designs [and] all later work on the" Lockheed A-12 included testing at Groom Lake, which before improvements for OXCART had inadequate facilities: buildings for only 150 people, a asphalt runway, and limited fuel, hangar, and shop space. Selected for its seclusion and climate, Groom Lake had received a new official name "Area 51" when A-12 test facility construction began in September
Black Tern Bog State Natural Area in southwest Vilas County, approximately northwest of Arbor Vitae. Access is via an unnamed dirt road off US Highway 51, north of the bog. The road wraps around the northern and eastern portions of the bog. It is also possible to park on the shoulder of US Highway 51, which passes along the western edge of the bog. Black Tern Bog State Natural Area Black Tern Bog State Natural Area is a Wisconsin Department of Natural Resources-designated State Natural Area featuring 20 acres (8 ha) of quaking sphagnum bog surrounding two small seepage lakes situated in a pitted outwash plain.