National Monument
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- Address:11149 U.S. Hwy. 16, Building B12 · Custer, SD · 57730
About
Immerse yourself within the third longest cave in the world. With over 210 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.
Source: gfp.sd.gov
From Wikipedia
Jewel Cave National Monument contains Jewel Cave, currently the fifth longest cave in the world and second longest cave in the United States, with 220.33 miles (354.59 km) of mapped passageways as of July 2025. It is located approximately 13 miles (21 km) west of the town of Custer in the Black Hills of South Dakota.
Source: Wikipedia — text licensed CC BY-SA 4.0. Verify alerts and operational details with the managing agency below.
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Hunting in this park
Hunting is generally prohibited in this National Park Service unit
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