Gypsum Cave (Nevada)

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Gypsum Cave
Gypsum Cave (Nevada) is located in Nevada
Gypsum Cave (Nevada)
Gypsum Cave (Nevada) is located in the United States
Gypsum Cave (Nevada)
Coordinates36°13′28″N 114°15′37″W / 36.22444°N 114.26028°W / 36.22444; -114.26028Coordinates: 36°13′28″N 114°15′37″W / 36.22444°N 114.26028°W / 36.22444; -114.26028
NRHP reference #10000443[1]
Added to NRHPJuly 8, 2010

Gypsum Cave is a limestone cave[2] located 15 miles east of east of Las Vegas in the U.S. state of Nevada. It contains six rooms and is measured at 320 feet long by 120 feet wide. The cave was first documented by Mark Raymond Harrington in a 1930 edition of Scientific American.[3][4] Up until about 11,000 BC (11,000 radiocarbon years ago),[5] Gypsum Cave was inhabited by the Shasta ground sloth.[6]

A few hundreds feet away, the Gypsum Cave Mine contains gypsum, anhydrite and uranium.


Human habitation of the cave dates to around 3000 BC. Harrington provided the first documentation of the contents of the cave following excavation in 1930-1931.[4] Human habitation was at the same time as at other local sites like Tule Springs, Lake Mojave and the Pinto Basin.[7]

The skull of the ground sloth Nothrotheriops shastensis Sinclair was found in Room 3 by the archaeologist Bertha Parker, who was Harrington's niece and served as expedition secretary.[8] Excavators also found the dung, backbone, claws and reddish-brown hair of the now-extinct ground sloth. Through radiocarbon dating, it was found that the sloth remains date back to 11,000 BC and earlier.[5] The dung has given information about what the environment and vegetation of the area was because the sloth was a herbivore. This ancient plant eater survived on capers, mustards, grasses, agave, yucca, phacelia, borages, mints, grape, globemallow, saltbushes and ephedra.[6] Most of these are still found in the area today, but the agave, yucca and grapes are only found at elevations 800 m and more higher, and close to water in the case of grapes. However, during the ice age, the climate was cooler and wetter. The geology of the area shows that the closest likely water supply was between 6–12 miles (9.7–19.3 km) away.[6]

The bones found in the cave are held by the Natural History Museum of Los Angeles County.[9]

In 1994, a sign, the Nevada State Historical Marker #103, was put up to indicate to tourists the way to the site. It was removed by the private owner of the Gypsum Cave, PABCO Mining Company, to avoid unwanted tourism on its grounds.[10] In the early 2000s, the Bureau of Land Management launched a survey for the construction of the proposed Harry Allen-Mead 500kV Transmission Line Project. Native tribes identified only 2 sites out of 56 that were highly significant to their culture, one of those was the Gypsum Cave.[11]

In 2017, a team of scientists conducting research on a skull found on-site by Harrington in the 1930s revealed it actually was a type of extinct, stilt-legged horse that died out during the last ice age (around 13,000 BC). The species was found not to be closely related to modern horses and was renamed Haringtonhippus francisci after Canadian scientist Charles Harington.[12][13]


  1. ^ "Weekly List of Actions Taken on Properties: 7/06/10 through 7/09/10". National Register of Historic Places. National Park Service. July 16, 2010. Retrieved August 7, 2010.
  2. ^ Gilreath, A. (2011-01-04). "Gypsum Cave". Online Nevada Encyclopedia. Nevada Humanities. Retrieved 2018-08-12.
  3. ^ "Gypsum Cave". Retrieved 2010-08-05.
  4. ^ a b "Gypsum Cave". Nevada State Historic Preservation Office. Retrieved 2010-08-05.
  5. ^ a b Martin, P. S. (2005). "Chapter 4. Ground Sloths at Home". Twilight of the Mammoths: Ice Age Extinctions and the Rewilding of America. University of California Press. pp. 118–128. ISBN 978-0-520-23141-2. OCLC 58055404. Retrieved 2017-07-08.
  6. ^ a b c Poinar, H. N.; Hofreiter, M.; Spaulding, W. G.; Martin, P. S.; Stankiewicz, B. A.; Bland, H.; Evershed, R. P.; Possnert, G.; Pääbo, S. (1998). "Molecular Coproscopy: Dung and Diet of the Extinct Ground Sloth Nothrotheriops shastensis". Science. 281 (5375): 402–406. doi:10.1126/science.281.5375.402.
  7. ^ Land, Barbara; Land, Myrick (2004). A short history of Las Vegas. pp. 6–8. ISBN 9780874175646. Retrieved 2010-08-05.
  8. ^ Harrington, M.R. (April 1940). "Man and Beast in Gypsum Cave" (PDF). Desert Magazine: 3–5. Archived from the original on 2013-10-22.
  9. ^ Elizabeth Glowiak, Gypsum cave revisited; A faunal and taphonomic analysis of a Rancholabrean-to-Holocene fauna in Southern Nevada,, 19 March 2008
  10. ^ Gypsum Cave - Las Vegas, Nevada - Ancient Aboriginal Dwelling Place,
  11. ^ Interstate Intertie Centennial Plan Environmental Assessment - Harry Allen-Mead 500kV Transmission Line Project,, March 2004
  12. ^ The Associated Press, Fossil found in cave holds clues of ancient horse,, 1 January 2018
  13. ^ Heintzman, P.D.; Zazula, G.D.; MacPhee, R.D.E; Scott, E.; Cahill, J.A.; McHorse, B.K.; Kapp, J.D.; Stiller, M.; Wooller, M.J.; Orlando, L.; Southon, J.; Froese, D.G.; Shapiro, B. (2017). "A new genus of horse from Pleistocene North America". eLife. 6. doi:10.7554/eLife.29944.