Jewel Cave National Monument
11149 U.S. Highway 16 Building B12                
Custer, SD 57730
Phone: 605-673-8300                                      
Fax: 605-673-8397

Located 13 miles West of Custer, SD and 24 miles East of Newcastle WY on U.S. Hwy 16

Immerse yourself within the third longest cave in the world. With 200 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. 

Visit the Jewel Cave National Monument web site.