Wind Cave National Park

How dark. The darkest place in the Black Hills.

Roads. The roads are very dark and wildlife roams. Be careful.

Parking. Designated places only. No overnight parking.

Wildlife. Beware of the bison.

Cell signal. For the most part, cell service doesn't work below or above ground. Plan accordingly. Look at the sky.

Nearest light. Hot Springs is the nearest town, and it is the one to think about. It is about 9 miles to the south, which is the same side of the sky the Milky Way core crosses, so it sits in front of you rather than behind.

Daniel Milks, My XO Adventures.

The southern sky is open here. The land to the south rises no more than 3 degrees, and the Milky Way core reaches 17.4, so it clears the ground by about 14.4 degrees at its highest.

Computed from elevation data, 16 directions sampled out to 19 miles and corrected for the curve of the Earth. Site elevation 4,137 feet, worst southern angle 3 degrees. ⚠️ This is arithmetic, not a visit. It knows the shape of the land and nothing about a locked gate, a security light or where a car can actually stop. The nearest sample sits 820 feet out, so a treeline at the edge of a clearing does not register in it at all, and at a wooded site that is the thing most likely to be wrong.

Finding a spot. Beyond the spot named above, what decides a good one is a clear view low to the south, because the Milky Way core and most of the season's best targets sit low in the southern sky. From this latitude the core never climbs higher than about 17 degrees, roughly a fist and a half held at arm's length above the horizon, so a ridge or a treeline to the south takes it away entirely. An ordinary parking area with an open southern horizon beats a named viewpoint with a ridge in the way.

Two other things matter as much and are easier to judge on arrival: whether headlights sweep the spot as cars pass, and whether there is a light left on somewhere that no map records. Local knowledge is welcome from anyone who knows a place well.

Wind Cave National Park sits in the southern Black Hills, north of Hot Springs. US Highway 385 and SD Highway 87 run through it. The park is working towards International Dark Sky Park certification and is not certified yet: it has been retrofitting its outdoor lighting, running public education, and working with nearby communities on light pollution. Free ranger night programs run in summer and cover light pollution, Lakota Star Knowledge, full moon hikes and telescope viewing. The guided night hikes go up the Elk Mountain trail. White flashlights and headlamps are not allowed on them and red light is, which is the same reason this site has a red mode. Long pants are recommended for poison ivy and ticks, the trail is steep and rocky and not wheelchair accessible, and nights get cold. There is no overnight parking outside the campground. Elk Mountain Campground has 64 sites, is open year round and around the clock, and is reserved through recreation.gov. It straddles the edge of a ponderosa pine forest and open prairie, and sites sit in both, which matters here: an open prairie site has the horizon a forested one does not. Flush toilets and drinking water run late May through September and fees are half price outside that; vault toilets are year round. There is no cell reception and no internet at the campground. Fires are allowed in the designated rings only and wood collection is not. Backcountry camping is allowed in the northern part of the park with a free permit. Snowfall averages 30 inches a year and periodically closes the park roads, and summer thunderstorms can bring large hail and lightning. The visitor center is at 26611 US Highway 385, Hot Springs SD 57747, and the park telephone is 605 745 4600.

Where to stop. Any designated parking area. The park runs its night hikes on the Elk Mountain trail, and the campground beside it has sites in both forest and open prairie. Take an open one if the sky is the point. Ranger night program dates are on the park’s own calendar.

Working towards International Dark Sky Park certification, and not certified yet. The Park Service says so itself on its dark sky page, checked 2026-08-25. Badlands, by contrast, was certified in July 2026.

How dark is it? Not measured. Nobody has published a sky-brightness reading for the park that this site can point at. The Park Service is retrofitting lighting in the park towards Dark Sky Park certification, which is an assessment in progress rather than a number.