Jewel Cave National Monument
Jewel Cave National Monument is a breathtaking underground wonder located in the Black Hills of South Dakota. Known as the third-longest cave in the world, it boasts over 200 miles of mapped passages adorned with stunning calcite crystals, stalactites, and other unique formations. The cave's intricate beauty and geological significance make it a must-visit for nature enthusiasts and adventure seekers. Guided tours offer visitors a chance to explore its mesmerizing chambers, while the surrounding surface area provides scenic hiking trails and wildlife viewing opportunities.
Opening Hours
Location
11149 US-16 B-12, Custer, SD 57730, USA
Everything You Need to Know
Why Visit
Marvel at one of the world's longest and most beautifully decorated caves.
Experience the thrill of exploring underground passages with expert guides.
Enjoy the serene beauty of the Black Hills above ground with scenic hikes and wildlife spotting.
History & Background
Discovered in 1900 by brothers Frank and Albert Michaud, Jewel Cave was named for its sparkling calcite crystals. It was designated a national monument in 1908 to preserve its unique geological features. Over the years, exploration has revealed its vast extent, making it one of the most significant cave systems in the world. The Civilian Conservation Corps (CCC) played a key role in developing early infrastructure, including the original stairway into the cave.
Insider Tips
Book your cave tour in advance, especially during peak summer months, as spots fill up quickly.
Wear comfortable walking shoes and bring a light jacket, as the cave maintains a cool temperature year-round (around 49°F/9°C).
Arrive early to explore the surface trails and visitor center exhibits before your tour.
Check the National Park Service website for any seasonal closures or special events.
What Visitors Say
“Visitors rave about the awe-inspiring formations and knowledgeable guides at Jewel Cave. Many highlight the Scenic Tour as a perfect introduction to the cave's beauty, while others appreciate the park's well-maintained trails and peaceful atmosphere above ground.”
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11149 US-16 B-12, Custer, SD 57730, USA