• 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 »

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

Immerse yourself within the third longest cave in the world. With over 166 miles of mapped and surveyed passages, this underground wilderness appeals to human curiosity. Its splendor is revealed through fragile formations and glimpses of brilliant color. Its maze of passages lure explorers, and its scientific wealth remains a mystery. This resource is truly a jewel in the National Park Service.

Did You Know?

Beautiful gypsum flowers in Jewel Cave/NPS file photo

When Jewel Cave was established as a National Monument in 1908, it was thought to be a small but pretty cave. It wasn’t until 1959 that explorers began to realize that Jewel Cave may be one of the longest caves in the world.