• 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 »

Contact Us

By Mail

Jewel Cave National Monument
11149 U.S. Highway 16
Building B12
Custer, SD 57730

By Phone

605-673-8300
Visitor Questions - Option 2
Hours of Operation - Option 3
School Programs / Field Trips - Option 4

By Fax

605-673-8397 - Visitor Center
605-673-8301 - Administrative Offices

 

By Email

e-mail us

Wait! Before you send your message ...
Jewel Cave National Monument receives hundreds of emails each year requesting information that is already available on our website. For example, due to planned construction projects in 2014, there are no reservations for the Scenic, Discovery, and Historic Lantern Tours. In an effort to save printed resources, postage, and staff time, we encourage you to browse the website for answers to your questions. As a Climate Friendly Park, we are trying our best to reduce, reuse, and recycle. Please join us in this Go Green effort.

 

Visiting On-Site

UTM Coordinates:

594270, 4842528 (UTM NAD 83)

Latitude / Longitude:

43 43' 46.6153" N

103 49' 46.6522" W

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.