Caution - Parking Lot at Jewel Cave is under construction
The parking lot project is on schedule for completion this fall. There is limited RV parking. The stairs and wheelchair ramp to the visitor center are also under construction. Signage along a service road will help guide visitors to the visitor center. More »
Cave / Karst Systems
Marc Ohms photo
Jewel Cave National Monument is well-known for its spectacular and unusual cave and karst features. Since 1959, cavers have made a concerted effort to map Jewel Cave, and have discovered that it is among the longest cave systems in the world. Over 166 miles of interconnected passages have been discovered so far, and studies indicate that this represents only a fraction of what remains to be found.
Did You Know?
The largest room discovered in Jewel Cave is called the Big Duh. It measures 570 feet long, is 180 feet wide at its widest point, and is 30 feet tall.