Coso Hot Springs, Historic district in Mojave Desert, California, US.

Coso Hot Springs is a hot spring complex in the Coso Volcanic Field of the Mojave Desert, Inyo County, California, near Little Lake and U.S. Route 395. Its mineral water reaches the surface at 207 °F (97 °C). The springs lie within Naval Air Weapons Station China Lake, between the Coso Mountains, north of Indian Wells Valley and south of Owens Valley.

The springs were a healing and ceremonial site for the Coso people, and later for the Northern Paiute and Timbisha, who call the place Kooso or Muattang Ka. In the 1920s it operated as a hot springs resort. Local Native American people still hold ceremonies there periodically.

The Timbisha name for the site is Kooso or Muattang Ka; the Coso people used the springs first, followed by the Northern Paiute and Timbisha, as a healing and ritual site. Local Native American people still hold ceremonies at the springs periodically, and the site is listed on the National Register of Historic Places.

The site sits near Little Lake in Inyo County surrounded by desert, so bring water and sun protection for your visit. Check ahead about access since this is a sacred location with restrictions for visitors.

The rock art lies in two named areas beside the springs, Big and Little Petroglyph Canyons, where more than 20,000 images survive in what researchers call the Coso style. The springs sit inside the Naval Air Weapons Station China Lake, so the canyons are on military land and not freely visited.