has several developed hot spring pools. The pools can be accessed by driving on the unpaved Saline Valley Road for several hours, or by flying a personal aircraft to the Chicken Strip—an uncharted airstrip a short walk from the springs. Death Valley National Park is a popular location for stargazing as it has one of the darkest night skies in the United States. Despite its remote location, air quality and night visibility are threatened by civilization. In particular, light pollution is introduced by nearby Las Vegas. The darkest skies are, in general, located in the northwest of the park. The northwestern area of the park, including sites such as Ubehebe Crater, is a Bortle class 1 or "excellent dark sky" site. The Andromeda Galaxy and the Triangulum Galaxy are visible to the unaided eye under these conditions, and the Milky Way casts shadows; optical phenomena such as zodiacal light or "false dawn" and gegenschein are also visible to the unaided eye under these conditions. Most southern regions of the park are Bortle class 2 or "average dark sky" sites. See also Henry Wade Exit Route California Historic Landmark List of nationally protected areas of the United States National parks in California National Register of Historic Places listings in Death Valley National Park Notes References Explanatory notes Citations Bibliography (adapted public domain text) Rothman, Hal K., and Char Miller. Death Valley National Park: A History (University of Nevada Press; 2013) 216 pages; an environmental and human history (adapted public domain text) External links Death Valley National Park by the National Park Service 1920s images of Death Valley and Surrounding Locales from the Death Valley Region Photographs Digital Collection: Utah State University Death Valley National Park by the Death Valley Conservancy Historic American Engineering Record in California National parks in California Protected areas of the Mojave Desert Protected areas of the Great Basin Sandboarding locations Parks in San Bernardino County, California National parks in Nevada Protected areas of Nye County, Nevada Protected areas of Esmeralda County, Nevada Protected areas established in 1994 Civilian Conservation Corps in California Parks in Southern California Dark-sky preserves in the United States 1994 establishments in California 1994 establishments in Nevada