Jewel Cave National Monument
Jewel Cave National Monument contains Jewel Cave, currently the fifth longest cave in the world and second longest cave in the United States, with 219.77 miles (353.69 km) of mapped passageways as of March 2024. It is located approximately 13 miles (21 km) west of the town of Custer in Black Hills of South Dakota. It became a national monument in 1908.
| Jewel Cave National Monument | |
|---|---|
IUCN category III (natural monument or feature) | |
Visitors and guide inside Jewel Cave | |
| Location | Custer County, South Dakota, U.S. |
| Nearest city | Custer, South Dakota |
| Coordinates | 43°43′46″N 103°49′46″W |
| Area | 1,273 acres (5.15 km2) |
| Created | February 7, 1908 |
| Visitors | 137,275 (in 2016) |
| Governing body | National Park Service |
| Website | Jewel Cave National Monument |
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