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March 29, 2024, 02:42:18 PM
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USA, South Dakota, Custer, Jewel Cave National Monument
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FdW
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USA, South Dakota, Custer, Jewel Cave National Monument
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Reply #1 on:
August 11, 2016, 08:33:16 PM »
Jewel Cave National Monument
https://www.nps.gov/jeca/index.htm
(
http://www.mindat.org/loc-45285.html
)
Jewel Cave
With calcite and hydromagnesite "balloons"
11149 U.S. Hwy. 16, Custer, Black Hills, 57730 South Dakota, USA
Also see:
https://en.wikipedia.org/wiki/Jewel_Cave_National_Monument
https://www.facebook.com/JewelCaveNPS
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