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Nailhead Spar

Nailhead Spar, a translucent cave crystal

The "jewels" of Jewel Cave. Nailhead Spar covers most of the surfaces in the cave. It is what gave the cave its name.

U.S. National Park Service

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NPS Photo

Public domain

Image

Jewel Cave National Monument, Code: JECA

Jewel Cave National Monument

NPS.gov Collection

7/10/2009 1:53:00 PM

Public Can View

Monday, January 1, 2018 8:07:25 PM

Monday, January 1, 2018 8:07:25 PM

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NIKON NIKON, COOLPIX P5000

10/2500 sec at f / 7.6

7.5 mm

ISO 100

Friday, July 10, 2009 7:53:25 AM

jpg

659.8 kB

Scenic