Caves

Jewel Cave National Monument

Custer, SD · Black Hills$Park entry free; Scenic Tour $16 adults, $8 youth

About

Jewel Cave, 13 miles west of Custer in the Black Hills, takes its name from the calcite crystals crusting its walls, the kinds called nailhead and dogtooth spar. More than 220 miles have been mapped, making it the second longest cave in the country, and the survey isn't finished. On the Scenic Tour an elevator drops you to a lit half-mile loop past flowstone and the ribbons rangers call cave bacon. The Historic Lantern Tour takes the rough early passages instead, with a lantern in your hand. Air rushes in and out of the cave as the pressure outside rises and falls.

Highlights

Third longest cave in the world with over 220 mapped miles still being surveyedWalls of calcite nailhead and dogtooth spar that give the cave its nameScenic Tour: a lit half mile loop reached by elevator past flowstone and boxworkHistoric Lantern Tour through the rough early passages by handheld lanternA breathing cave where air rushes in and out as outside pressure changes

Getting there

11149 U.S. Hwy. 16, Custer, SD 57730

Related places

Wind Cave National Park Caves

Wind Cave National Park

Hot Springs, SD · Black HillsFree

Boxwork, rarely found anywhere else in the world, hangs from the ceilings of Wind Cave in South Dakota and lines many of its walls. In 1903 this became the eighth national park…

Badlands National Park Canyons & deserts

Badlands National Park

Interior, SD · High Plains$

About an inch a year wears off the buttes of Badlands National Park, 75 miles east of Rapid City, South Dakota. The park estimates they have another 500,000 to a million years…

Howe Caverns Caves

Howe Caverns

Howes Cave, NY · Mohawk Valley$$

The traditional tour at Howe Caverns, about 40 miles from Albany, goes 156 feet underground and includes a quarter-mile boat ride on the Lake of Venus. Lester Howe crossed that…

Part of these collections