Death Valley Earth at 134 °F (56.7 °C) on July 10, 1913, as well as the highest recorded natural ground surface temperature on Earth at 201 °F (93.9 °C) on July 15, 1972. Located near the border of California and Nevada, in the Great Basin, east of the Sierra Nevada mountains, Death Valley constitutes much of Death Valley National Park and is the principal feature of the Mojave and Colorado Deserts Biosphere Reserve. It is located mostly in Inyo County, California. It runs from north to south between the Amargosa Range on the east and the Panamint Range on the west; the
Death Valley Railroad bought the equipment, track and rolling stock to construct their own line located near Loving, New Mexico, which became the United States Potash Railroad. All the rails from the Death Valley Railroad were used on the new line until about 1941 when they were replaced by heavier-pound rails from the Atchison, Topeka & Santa Fe Railroad. The line was used until 1967 when better potash deposits were discovered in Saskatchewan and Pacific Coast Borax Company merged with U.S. Potash and became U.S. Borax & Chemical Cooperation. All three engines that were on the Death Valley Railroad are preserved. After the