• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Speleothems - Dogtooth Spar

Dogtooth Spar
Dogtooth Spar
NPS Photo by Jason Walz
Spear-shaped crystals of calcite called dogtooth spar frequently line small pockets in the limestone rock. These crystals are a prominent feature of other caves in the Black Hills, most notably, Jewel Cave of Jewel Cave National Monument.

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

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

Did You Know?

American bison on the Wind Cave National Park prairie

The American bison is the largest terrestrial mammal in North America. Male bison can weigh a ton and can run 35 miles per hour. Do not approach bison. They weigh more and can outrun you. More...