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Wind Cave National Park

South Dakota · Established January 9, 1903

A breathing labyrinth of boxwork beneath bison-grazed prairie

Area
33,971 acres
Established
January 9, 1903
Recreation visits
606,258 / yr
State
South Dakota
Highest point
Rankin Ridge, 5,013 ft (1,528 m)
Surveyed cave length
About 168 miles (270 km) as of 2025

Wind Cave Weather Forecast

Loading the National Weather Service forecast for Wind Cave…

Seven-day outlook at the park's reference point (43.580, -103.439). Elevation changes everything in the mountains — expect colder, windier and wetter conditions on high ground.

Map of Wind Cave National Park

Shaded relief map of Wind Cave National Park with the park boundary and major features
National ParkWind Cave
02 mi
Shaded relief · Copernicus DEM · NPS boundary (dashed)Open in the Park Atlas →

The Park

Wind Cave National Park keeps two landscapes stacked one atop the other. At the surface, rolling mixed-grass prairie meets ponderosa pine on the southeastern flank of South Dakota's Black Hills, and bison, elk and pronghorn graze much as they did before the plains were fenced. Below, a maze of passages in Mississippian limestone winds for more than 160 surveyed miles, making Wind Cave one of the longest caves on Earth.

The park was established on January 9, 1903, the first cave anywhere to be protected as a national park. Its name comes from the air that rushes in or out of the natural entrance as outside barometric pressure rises and falls, as if the hills themselves were breathing. Inside, walls and ceilings are laced with boxwork, a delicate honeycomb of calcite fins that is rare in most caves but abundant here.

Geography

Wind Cave National Park covers about 34,000 acres in Custer County, roughly five miles north of Hot Springs, where the Black Hills uplift gives way to the Great Plains. The western part of the park is hillier and forested, while the east opens into broad, grassy flats and rolling ridges.

Beaver Creek, Highland Creek and Cold Brook drain the park toward the Cheyenne River, cutting canyons through the ring of sedimentary rocks that encircles the Black Hills. Rankin Ridge, crowned by a fire lookout tower, is the park's high point and offers a sweeping view of prairie and pine.

The cave itself lies beneath a surprisingly small footprint of land, its passages stacked in three-dimensional tangles within the upper part of the limestone. Surveyors continue to add miles of passage every year.

Landmarks

  • Wind Cave natural entrance and visitor center areaCaveThe small natural opening where air whistles in and out, beside the park visitor center where cave tours begin.
  • Rankin RidgePeak · 5,013 ftThe park's high point, reached by a short nature trail to a fire lookout with views over the southern Black Hills.
  • Wind Cave CanyonCanyonA limestone canyon east of the visitor center, good for spotting cliff swallows, woodpeckers and owls.
  • Cold Brook CanyonCanyonA trail near the park's southwest corner descends this canyon through prairie and a prairie dog town.
  • Elk MountainAreaA nature trail near the campground winds through the transition between ponderosa forest and prairie.
  • Lookout PointAreaA trail loop crossing rolling prairie and Beaver Creek country north of the visitor center.
  • Highland CreekRiverThe park's longest trail follows this creek through wooded draws and open grassland.
  • Boland RidgePeakA ridge in the park's eastern prairie where bison and elk are often seen from the trail.
  • East Bison FlatsAreaOpen grassland in the southern park, typical bison and pronghorn range.

Geology

The Black Hills are an elongated dome, raised during the Laramide Orogeny roughly 60 to 50 million years ago. Erosion has stripped the top of that dome, exposing a core of ancient Precambrian crystalline rock surrounded by concentric rings of younger sedimentary layers that tilt away from the center. Wind Cave National Park sits on the southeastern side of this bull's-eye.

The cave's host rock, the Pahasapa Limestone, formed on the floor of a warm, shallow sea some 360 to 340 million years ago. After the sea retreated, the exposed limestone was weathered, creating early cavities and breccia, before new seas buried it beneath the red sandstones, shales and limestones of the Minnelusa Formation.

The main phase of cave enlargement came much later, around 60 to 40 million years ago, as the Black Hills rose and slightly acidic groundwater moved through fractures in the limestone. Uplift lowered the water table and drained the passages, leaving a dry, three-level maze in the upper part of the formation.

Boxwork is Wind Cave's signature. It formed where thin veins of calcite filled cracks in the rock; when the surrounding bedrock later dissolved away, the more resistant calcite fins were left projecting from walls and ceilings like the cells of a honeycomb. Frostwork, popcorn and other speleothems add to the cave's delicate decoration.

Deep time

  1. PrecambrianCrystalline igneous and metamorphic rocks form the deep core later exposed at the heart of the Black Hills.
  2. About 360 to 340 million years agoA shallow sea covers the region and deposits the Pahasapa Limestone that will host Wind Cave.
  3. Pennsylvanian to PermianReturning seas and coastal environments bury the limestone under the red beds of the Minnelusa Formation.
  4. About 60 to 50 million years agoThe Laramide Orogeny lifts the Black Hills dome, tilting the rock layers around its flanks.
  5. About 60 to 40 million years agoGroundwater dissolves and enlarges the cave's passages; later drops in the water table drain them.
  6. 1881The cave's natural entrance is first documented by settlers, drawn by the wind blowing from the opening.
  7. 1903Wind Cave becomes the first cave in the world protected as a national park.

The rocks

  • Precambrian crystalline corePaleoproterozoic
    Granite and metamorphic rock at the center of the Black Hills uplift, underlying the park's sedimentary layers.
  • Pahasapa LimestoneMississippian
    Marine limestone that hosts Wind Cave and most other Black Hills caves.
  • Minnelusa FormationPennsylvanian to Permian
    Red sandstone, shale and limestone lying directly above the Pahasapa, exposed on the park's ridges.
  • BoxworkCave deposit
    Thin calcite fins left standing after the surrounding limestone dissolved, found in exceptional abundance in Wind Cave.

Trees, Plants & Ecosystems

  • 614vascular plant species recorded
  • Mixed-grass prairieEastern and southern flats and rolling hills
    Big and little bluestem, western wheatgrass and blue grama blend tall- and short-grass species, grazed by bison and dotted with prairie dog towns.
  • Ponderosa pine forestWestern hills, ridges and Rankin Ridge
    Open pine stands on the flanks of the Black Hills shelter pygmy nuthatches, red crossbills and wild turkeys.
  • Riparian woodlandsBeaver Creek, Highland Creek and Cold Brook drainages
    Bur oak, green ash, American elm and chokecherry line the creeks, drawing songbirds and white-tailed deer.
  • Prairie dog townsLevel grasslands throughout the park
    Colonies of black-tailed prairie dogs create habitat for burrowing owls, badgers and the reintroduced black-footed ferret.
  • Cave environmentBeneath the park, within the Pahasapa Limestone
    A dark, humid, stable underground world of dissolved passages, boxwork and small pools.

Trees

  • Ponderosa pinePinus ponderosaThe defining tree of the Black Hills, covering the park's western hills and ridges.
  • Rocky Mountain juniperJuniperus scopulorumA scaly-barked evergreen on rocky slopes and canyon walls.
  • Bur oakQuercus macrocarpaA tough, fire-resistant oak of draws and forest edges, with large fringed acorn cups.
  • Green ashFraxinus pennsylvanicaA common streamside tree in the park's creek bottoms.
  • American elmUlmus americanaGrows along moist drainages at the western edge of its range.
  • Box elderAcer negundoA fast-growing maple of creek banks and sheltered draws.
  • Paper birchBetula papyriferaA white-barked relict of cooler times, found in shaded, moist spots.
  • ChokecherryPrunus virginianaA shrubby tree whose dark fruit feeds birds, bears of old, and today's small mammals.

Wildflowers, shrubs & other plants

  • Big bluestemAndropogon gerardiiA tallgrass that turns bronze-red in autumn in the park's moister swales.
  • Little bluestemSchizachyrium scopariumA bunchgrass whose russet autumn color paints the hillsides.
  • Blue gramaBouteloua gracilisA short, drought-tolerant grass with eyebrow-shaped seed heads.
  • BuffalograssBuchloe dactyloidesA low, sod-forming grass that thrives where bison and prairie dogs graze heavily.
  • Western wheatgrassPascopyrum smithiiA blue-green cool-season grass important to grazing animals.
  • Needle and threadHesperostipa comataNamed for its long, twisted awns that drill seeds into the soil.
  • Pasque flowerAnemone patensOne of the first wildflowers of spring, its fuzzy lavender cups opening on still-brown prairie.
  • Narrow-leaved purple coneflowerEchinacea angustifoliaA drooping-petaled coneflower of dry prairie in early summer.
  • Dotted blazing starLiatris punctataSpikes of purple flowers that bloom in late summer.
  • Prairie coneflowerRatibida columniferaA Mexican-hat bloom with a tall central cone, common along roads and trails.
  • Scarlet globemallowSphaeralcea coccineaLow orange-red flowers on dry, grazed ground.
  • Soapweed yuccaYucca glaucaA spiky plains yucca sending up cream-colored flower stalks in early summer.
  • Plains pricklypearOpuntia polyacanthaA low cactus with yellow blooms, common on overgrazed or rocky prairie.

Wildlife

  • 54mammals
  • 217birds
  • 11reptiles
  • 6amphibians
  • 8fish

Mammals

  • American bisonBison bisonThe park's herd descends from animals returned when the area became a game preserve, and it is one of the few genetically pure, free-roaming herds on public land.
  • ElkCervus elaphusBrought back with bison and pronghorn; bulls bugle across the park in September.
  • PronghornAntilocapra americanaNorth America's fastest land mammal, seen on the open eastern grasslands.
  • Black-tailed prairie dogCynomys ludovicianusA keystone species whose towns support many other prairie animals.
  • Black-footed ferretMustela nigripesOne of North America's most endangered mammals, reintroduced to the park's prairie dog towns.
  • Mule deerOdocoileus hemionusCommon along forest edges in the western part of the park.
  • White-tailed deerOdocoileus virginianusFavors the wooded creek bottoms.
  • Mountain lionPuma concolorPresent in the Black Hills and occasionally recorded in the park.
  • CoyoteCanis latransA frequent hunter of prairie dog towns and grassland rodents.
  • American badgerTaxidea taxusA powerful digger that excavates prairie dog and ground squirrel burrows.
  • BobcatLynx rufusA secretive cat of rocky canyons and forest edges.
  • Eastern fox squirrelSciurus nigerFound in the oak and ash woodlands along creeks.
  • Bushy-tailed woodratNeotoma cinereaBuilds stick nests in rock crevices and near cave openings.
  • Townsend's big-eared batCorynorhinus townsendiiA cave-roosting bat with enormous ears, sensitive to disturbance.

Birds

  • Sharp-tailed grouseTympanuchus phasianellusMales dance on spring leks in the open prairie.
  • Burrowing owlAthene cuniculariaA small, long-legged owl that nests in abandoned prairie dog burrows.
  • Western meadowlarkSturnella neglectaIts flute-like song rings across the grasslands from spring into summer.
  • Golden eagleAquila chrysaetosHunts prairie dogs and rabbits over the open country.
  • Red-tailed hawkButeo jamaicensisThe most commonly seen hawk, perched on snags along the roads.
  • Lewis's woodpeckerMelanerpes lewisA dark, pink-bellied woodpecker that catches insects in flight from pine snags.
  • Red-headed woodpeckerMelanerpes erythrocephalusA striking eastern woodpecker using burned and open pine stands.
  • Northern flickerColaptes auratusA ground-feeding woodpecker often seen probing for ants.
  • Pygmy nuthatchSitta pygmaeaTiny, sociable birds tied closely to ponderosa pine.
  • Red crossbillLoxia curvirostraPries seeds from pine cones with its crossed bill.
  • Black-billed magpiePica hudsoniaA long-tailed, black-and-white corvid of brushy draws.
  • Mountain bluebirdSialia currucoidesA sky-blue thrush of open grassland edges.
  • Lazuli buntingPasserina amoenaSings from shrubby thickets along the creeks in summer.
  • Wild turkeyMeleagris gallopavoFlocks forage in pine forests and meadows.

Reptiles & amphibians

  • Prairie rattlesnakeCrotalus viridisThe park's only venomous snake, often near prairie dog towns and rocky outcrops.
  • BullsnakePituophis cateniferA large, harmless constrictor that hisses loudly when threatened.
  • Plains hog-nosed snakeHeterodon nasicusAn upturned-snout snake that plays dead when cornered.
  • Smooth green snakeLiochlorophis vernalisA slender, bright green insect-eater hidden in moist grass.
  • Painted turtleChrysemys pictaBasks on logs in stock ponds and slow creek pools.
  • Boreal chorus frogPseudacris maculataIts rising, comb-strumming call is a sign of early spring.
  • Northern leopard frogRana pipiensA spotted frog of creek edges and wet meadows.
  • Tiger salamanderAmbystoma tigrinumA burrowing salamander that emerges on rainy nights to breed in ponds.

Fish

  • Longnose daceRhinichthys cataractaeA native minnow of riffles in the park's small streams.
  • Creek chubSemotilus atromaculatusA hardy native minnow of creek pools.
  • Mountain suckerCatostomus platyrhynchusA small native sucker that grazes algae from stream bottoms.

Insects & other invertebrates

  • Regal fritillarySpeyeria idaliaA large orange-and-black prairie butterfly that has declined across much of its range.
  • Two-tailed swallowtailPapilio multicaudataA big yellow swallowtail visiting wildflowers along wooded creeks.
  • Olympia marbleEuchloe olympiaA small, marbled white butterfly of spring grasslands.
  • Twelve-spotted skimmerLibellula pulchellaA boldly patterned dragonfly patrolling stock ponds and creeks.

Species totals are the park's certified NPSpecies checklist (occurrence: present).

Climate & When to Visit

Wind Cave has a continental, semi-arid climate with four distinct seasons, moderated slightly by the Black Hills. Spring is the wettest and most changeable season; summers are hot with frequent thunderstorms; autumns are dry and pleasant; and winters are cold, with around 30 inches of snow in an average year.

Summer thunderstorms can be severe, producing large hail and frequent lightning over the open prairie. Below ground, the story is different: the cave keeps a steady, cool temperature year-round, so tours feel the same in July as in January, and a light jacket is useful in any season.

  • Spring
    Highs range from about 50 to 70°F with highly variable weather; this is the park's wettest season, and late snowstorms are possible.
  • Summer
    Hot and generally dry, with highs regularly above 80°F (27°C); strong afternoon thunderstorms can bring hail and lightning.
  • Autumn
    Generally dry with warm days and cool nights, highs in the 50s and 60s°F and frequent freezing lows; elk bugling peaks in September.
  • Winter
    Highs in the high 30s°F and lows around 10°F; snowfall averages about 30 inches and can periodically close park roads.
Weather hazards
Bison
Bison are large, fast and unpredictable; stay at least 25 yards away and never approach them on foot.
Severe thunderstorms
Seek shelter in a vehicle or building when storms approach, as open prairie offers little protection from hail and lightning.
Rattlesnakes
Watch the ground on prairie trails and near prairie dog towns, especially on warm days.
Winter storms
Snow and wind can make park roads impassable; check road status before driving in winter.
Cave conditions
Cave tours involve many stairs and low ceilings; wear sturdy shoes and bring a light jacket.

Wind Cave Questions

When is the best time to visit Wind Cave National Park?

Late spring through early autumn offers the widest range of cave tours and the best wildlife viewing on the prairie. September is especially appealing, with dry, mild weather and bugling elk. The cave's temperature stays steady year-round, so tours are comfortable in any season.

Why is it called Wind Cave?

Air moves in or out of the cave's natural entrance as the outside barometric pressure changes, equalizing pressure between the vast cave and the atmosphere. When pressure outside is high, air flows in; when it drops, the cave exhales.

What is boxwork?

Boxwork is a honeycomb-like network of thin calcite fins projecting from cave walls and ceilings. The calcite filled cracks in the rock, and when the surrounding bedrock dissolved, the fins were left behind. It is rare in most caves but abundant in Wind Cave.

How long is Wind Cave?

About 168 miles of passage had been surveyed as of 2025, ranking it among the longest caves in the world. Explorers continue to map new passages, so the number keeps growing.

Where can I see bison at Wind Cave?

Bison roam freely across the park and are often seen from the main park road and in the open grasslands of the eastern and southern sections. Scan prairie dog towns and broad flats, especially early and late in the day, and keep a safe distance.

What is the weather like at Wind Cave?

Summers are hot, often above 80°F, with strong afternoon thunderstorms, while winters are cold with lows near 10°F and about 30 inches of snow a year. Spring is the wettest season and the most unpredictable.