Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. During summer, it is thought to be the hottest place on Earth. Death Valley is home to the Timbisha tribe of Native Americans, formerly known as the Panamint Shoshone, who have inhabited the valley for at least the past millennium. Death Valley's Badwater Basin is the point of lowest elevation in North America, at below sea level. It is east-southeast of Mount Whitney — the highest point in the contiguous United States, with an elevation of 14,505 feet (4,421 m). On the afternoon of July10, 1913, the United States Weather Bureau recorded a high temperature of 134 °F (56.7 °C) at Furnace Creek in Death Valley, which stands as the highest ambient air temperature ever recorded on the surface of the Earth. This reading, however, and several others taken in that period are disputed by some modern experts. Lying mostly in Inyo County, California, 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 runs from north to south between the Amargosa Range on the east and the Panamint Range on the west. The Grapevine Mountains and the Owlshead Mountains form its northern and southern boundaries, respectively. It has an area of about . The highest point in Death Valley National Park is Telescope Peak, in the Panamint Range, which has an elevation of . Geology Death Valley is a graben—a downdropped block of land between two mountain ranges. It lies at the southern end of a geological trough, Walker Lane, which runs north to Oregon. The valley is bisected by a right lateral strike slip fault system, comprising the Death Valley Fault and the Furnace Creek Fault. The eastern end of the left lateral Garlock Fault intersects the Death Valley Fault. Furnace Creek and the Amargosa River flow through part of the valley and eventually disappear into the sands of the valley floor. Death Valley also contains salt pans. According to current geological consensus, at various times during the middle of the Pleistocene era, which ended roughly 10,000–12,000 years ago, an inland lake, Lake Manly, formed in Death Valley. The lake was nearly long and deep. The end-basin in a