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

    Jewel Cave

    National Monument South Dakota

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  • Caution - Roadwork on Highway 16 - Expect Delays

    Construction projects both along highway 16 and the Jewel Cave parking lot are planned during this summer season. The visitor center will be open daily, 8:00 a.m. – 5:30 p.m. Tours are scheduled throughout the day. No reservations for cave tours. More »

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

Immerse yourself within the third longest cave in the world. With over 170 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?

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.