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 pupfish Death Valley pupfish The Death Valley pupfish ("Cyprinodon salinus"), also known as Salt Creek pupfish, is found in Death Valley National Park. There are two recognized subspecies: "C. s. salinus" and "C. s. milleri". It is endemic to two small, isolated locations and currently classified as endangered. The desert pupfish is a small, silvery colored fish with 6-9 dark bands on its sides. It has an average length of , with a recorded maximum of . The males turn bright blue during mating season, April through October. The pupfish can withstand harsh conditions that would kill other fish: water that