• Explore and Discover One of the Last Frontiers in the World ...

    Jewel Cave

    National Monument South Dakota

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  • No Reservations in 2013

    Beginning January 2, 2013, Jewel Cave National Monument will not offer advanced ticket reservations, except for Wild Caving dates. Due to construction projects and assumed disruptions in service, ticket sales will occur on a first come first serve basis. More »

Cave / Karst Systems

A caver in Jewel Cave (Marc Ohms Photo)

A cave explorer in an area known as "The Stratosphere," approximately 5 miles from the elevator entrance.

Marc Ohms photo

Jewel Cave National Monument is well-known for its spectacular and unusual cave and karst features. Since 1959, cavers have made a concerted effort to map Jewel Cave, and have discovered that it is among the longest cave systems in the world. Over 166 miles of interconnected passages have been discovered so far, and studies indicate that this represents only a fraction of what remains to be found.

Did You Know?

A caver measures wind speed at the Humdinger / NPS file photo

Due to changes in barometric pressure, strong winds blow through Jewel Cave’s passages miles from the natural entrance. Areas in the cave where the wind is exceptionally strong or loud have names like Hurricane Corner, Whistle Stop, Exhaust Pipe, Humdinger, and Drafty Maneuver.