• 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

    Construction projects both along highway 16 and the Jewel Cave parking lot are in progress. The Jewel Cave Visitor Center is open daily from 8:30 a.m. to 4:30 p.m. with tours scheduled throughout the day. No reservations for cave tours.

  • Highway 16 construction near Jewel Cave entrance

    Construction of Highway 16 through Jewel Cave National Monument is progressing on schedule. Motorists should use caution while traveling through the construction zone. Visitors to Jewel Cave should plan extra travel time and come early in the day. More »

  • The parking lot at Jewel Cave takes shape

    Jewel Cave's parking lot project is on schedule for completion this fall. The stairs and wheelchair ramp to the visitor center are under construction. Signage along a service road and staff assistance will help guide visitors to the visitor center. More »

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Did You Know?

Calcite Spar Crystal/NPS file photo

The “jewels” of Jewel Cave are calcite spar crystals. Calcite, which is about as hard as your fingernail, is too soft to be considered a true jewel.