• Grand Palace

    Great Basin

    National Park Nevada

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  • Road Work at Great Basin National Park

    Road work will create delays on the main park road going up to Lehman Caves Visitor Center and Wheeler Peak Scenic Drive. Wheeler Peak Campground will close at noon on September 2nd and portions of the Scenic Drive. Click more for details. Updated 8/25/14 More »

  • Snake Creek Road and Campsites Closed

    The Snake Creek Road will be closed from the park boundary into the park to begin work on campsites, trails and restroom improvements. Work will continue until snow closes the project. Work will resume in Spring 2015.

Moonmilk (Hydromagnesite)

moonmilk deposits
Moonmilk deposits seen along the 90 Minute Tour of Lehman Caves.
NPS PHOTO Scott babinowich
 
Moonmilk: The Healing Power of Caves
Moonmilk is a white formation that looks like powder when dry or cottage cheese when wet. There is a lot of it in the Rocky Road and on the ceiling in the Inscription Room. Moonmilk can be a combination of different (mostly carbonate) minerals. Some common minerals composing moonmilk are calcite, aragonite and hydromagnesite. Humans have used moonmilk as medicine to stop bleeding, induce a mother's milk, and for ulcers. There are several theories for the formation of moonmilk. One is that bacteria play a role in its origins. Another is that the moonmilk is deposited directly from water the same way other speleothems are, but for some reason the crystals never grow large or connected.

Did You Know?

Did You Know?

Notch Peak, located in West Millard County, Utah, and visible from Great Basin National Park, towers above the desert valleys at 9,725 ft. elevation. This 3,000 ft sheer cliff is one of the tallest limestone cliffs in America.