Jewel Cave National Monument


Jewel Cave National Monument

National monument, southwestern South Dakota, U.S. Established in 1908, it occupies an area of 2 sq mi (5 sq km). It is noted for its limestone caverns, a series of chambers joined by narrow passages. The known length of the caverns is 77 mi (124 km).

This entry comes from Encyclopædia Britannica Concise.
For the full entry on Jewel Cave National Monument, visit Britannica.com.

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