The South Dakota park where you can hike with bison, then drop into the Earth’s crust

It’s two parks stacked on top of each other

Wind Cave National Park sits in South Dakota’s Black Hills, about 10 miles north of Hot Springs, and it pulls off something few parks can. Below the surface, over 168 miles of mapped passageways twist through the rock.

Above ground, more than 33,000 acres of open prairie and forest roll out in every direction, with bison grazing across the grass.

You can explore both in the same day, and most people don’t realize that until they get there.

The Lakota call it Maka Oniye, the breathing earth

The Lakota people hold Wind Cave as sacred ground, the place where both humans and bison first came to the surface of the Earth. They call it Maka Oniye, meaning “breathing earth.”

The first documented discovery by non-Native people came in 1881, when the Bingham brothers followed a rush of wind blowing from a small hole in the ground.

By 1890, a teenager named Alvin McDonald was mapping miles of passages with nothing but a candle and a ball of string. Paying visitors started arriving in 1892.

Only 5 to 10 percent of the cave has been mapped

With more than 168 miles of explored passageways, Wind Cave ranks as the sixth longest cave in the world and the third longest in the United States, behind Mammoth Cave in Kentucky and nearby Jewel Cave.

Scientists believe the mapped sections cover only 5 to 10 percent of what’s down there. Foot for foot, it’s the densest cave system on the planet, packing more passage volume per cubic mile than any other.

Explorers keep finding new sections every year.

Storm fronts make the cave exhale through a 10-inch hole

The cave earns its name from the wind that blows in and out of its natural entrance. As atmospheric pressure changes outside, the cave pushes or pulls air to equalize.

When a storm rolls in and pressure drops, air rushes out. When pressure rises, air flows back in.

Western South Dakota’s fast-moving weather makes the effect strong, and the natural opening, roughly 10 by 14 inches, squeezes the airflow into a concentrated blast you can feel from several feet away.

Honeycomb boxwork lines the walls, and 95 percent of it is here

Wind Cave holds about 95 percent of all the boxwork formations ever discovered on Earth. Boxwork looks like thin calcite fins projecting from the walls and ceilings in a honeycomb pattern.

You’ll also find frostwork, delicate white crystals that look like tiny needles growing from the rock. Cave popcorn, small rounded bumps of calcite or aragonite, covers other surfaces.

Because the cave runs dry compared to most, you won’t see the stalactites and stalagmites common in other caves.

Pick your tour by how many stairs you want to climb

Ranger-guided tours are the only way inside Wind Cave. The Garden of Eden Tour takes about an hour, covers a quarter mile, and has 150 stairs.

The Natural Entrance Tour runs 75 minutes over two-thirds of a mile with 300 stairs, and you walk in through the historic entrance.

The Fairgrounds Tour goes 90 minutes with 450 stairs, reaching upper levels where you can see popcorn and frostwork up close. An accessibility tour with no stairs is also available.

The cave sits at a constant 54 degrees year-round, so bring a light jacket.

Bronx Zoo bison from 1913 built one of the purest herds left

In 1913, the American Bison Society shipped 14 bison from the Bronx Zoo to Wind Cave to help bring the species back. Six more arrived from Yellowstone in 1916.

Today, 350 to 500 bison roam the park’s prairie, and genetic testing has confirmed this herd as one of the most genetically pure public herds in North America, with almost no cattle gene mixing.

Wind Cave’s bison have since been sent to establish and strengthen herds on other public and tribal lands across the country.

Elk bugle at dawn and prairie dogs draw the predators in

Bison get the attention, but the park is full of pronghorn, elk, mule deer, prairie dogs, and coyotes. Rarer animals live here too, including black-footed ferrets, burrowing owls, and mountain lions.

Prairie dog towns along Highway 385 pull in predators and birds, so they’re some of the best spots to sit and watch. Elk show up most often near dawn and dusk, and in fall, bull elk bugle during mating season.

Stay at least 25 yards from all wildlife, and farther from bison.

Open prairie covers 75 percent of the park

Wind Cave protects one of the largest remaining natural mixed-grass prairies in the United States.

The landscape sits right where the Great Plains grasslands meet the ponderosa pine forests of the Black Hills, so you get both in one view.

About 75 percent of the park is open prairie, with the rest split between pine forest and streamside habitat. Wildflowers spread across the grass in spring and early summer.

The park runs prescribed fires to keep the prairie healthy and functioning the way it would have naturally.

Hike to the highest point and see all the way to the Badlands

Over 30 miles of trails cross the park. The Rankin Ridge Nature Trail is a one-mile loop that climbs to the highest point in the park, where you can see all the way to the Badlands on a clear day.

The Lookout Point and Centennial Trail loop runs about 4.75 miles through grasslands and pine forests, with bison and prairie dog sightings along the way.

Wind Cave Canyon Trail follows 1.8 miles of limestone cliffs where cliff swallows, canyon wrens, and great horned owls nest. The park has an open hike policy, so you can wander off the marked trails if you want.

The 111-mile South Dakota Centennial Trail starts at the park’s southern end.

No entrance fee, year-round camping, and quiet gravel roads

Highway 385 and Highway 87 run paved routes through the park with pullouts and wayside exhibits along the way.

For something quieter, gravel roads NPS 5 and NPS 6 on the east side give you a better shot at spotting bison without the traffic.

Elk Mountain Campground sits at the edge of ponderosa pine forest and open prairie and stays open all year. The park itself has no entrance fee.

You only pay for cave tours and camping.

The visitor center covers cave geology, prairie wildlife, and the work of the Civilian Conservation Corps.

Most people drive right past it on the way to Mount Rushmore

Wind Cave gets overlooked by travelers headed to Mount Rushmore, the Badlands, or Custer State Park. That works in your favor.

The trails run quieter than neighboring parks, and you won’t fight crowds at the trailheads.

Few places in the national park system let you walk through a world-class cave in the morning and watch bison graze across open prairie in the afternoon.

Many visitors who come for a quick cave tour leave wishing they had planned more time above ground. The park sits within easy reach of other Black Hills stops, so it fits right into a South Dakota road trip.

Explore Wind Cave National Park in South Dakota

You’ll find Wind Cave National Park along U.S. Highway 385, about 10 miles north of Hot Springs and roughly 75 miles south of Rapid City.

The visitor center stays open year-round and serves as the starting point for all cave tours. Book your tour tickets in advance, because they sell out, especially in summer.

Elk Mountain Campground has 62 sites for tents and RVs, open all year.

The park sits about 22 miles south of Custer, so you can pair it with a full day in the Black Hills.

This article was created with AI assistance and human editing.

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