• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Speleothems - Frostwork

Frostwork
Frostwork
NPS Photo
 
Delicate needle-like growths of calcite or a related mineral, aragonite, are called frostwork. In places the frostwork may grow on top of cave popcorn or boxwork. The origin of frostwork is controversial. In Wind Cave, it seems to concentrate in passages with above average airflow where, it is thought, evaporation plays a role in its formation.
 

More Speleothems:
Boxwork | Calcite Rafts | Cave Popcorn |
Dogtooth Spar | Flowstone/Dripstone |
Gypsum Features | Helictite Bushes

Click here to see a program about the formations of Wind Cave

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