Peter Norbeck Scenic Byway
Jewel Cave National Monument, SD

Named for the jewel-like Nailhead and Dogtooth Spar crystals which line more than 110 miles of passageways, Jewel Cave is the second largest cave in the U.S. and the third largest cave in the world. The cave extends for 126 miles, and much of the cave is located under the Black Hills Forest.

Visitors can find short tours into the cave or get their gear together for serious spelunking trips that can last from 20 hours to 4 days. In addition to taking a tour through Jewel Cave, there are other ways to enjoy the entire monument. Several trails are available inside and outside of Jewel Cave. A hike through the ponderosa pine forest on the surface of the cave may give you an in-depth look at the contrasting ecosystems above and below the ground.

The cave also presents wildlife to visitors. Several species of bats make their home in Jewel Cave. In addition to the bat species that make their home inside Jewel Cave, there are 120 bird species that make their homes on the outside of the cave. This National Monument is a haven for nature and a place where nature is still thriving.