In southern New Mexico, a sea of white dunes stays cool even when it hits 100 degrees

The desert that looks like a snowstorm

White Sands National Park sits in southern New Mexico between two mountain ranges, and the first time you see it, your brain argues with your eyes.

The dunes run white in every direction, and in the middle of the desert, the whole place looks like a winter scene after a heavy snow. But reach down and touch the sand.

It’s cool.

That’s the first thing that tells you this place doesn’t follow normal rules, and it won’t be the last.

275 square miles of the world’s largest gypsum dunefield

The park protects the largest gypsum dunefield on Earth, stretching 275 square miles across the Tularosa Basin. The dunes run from 10 to 60 feet tall, and they move.

The most active ones drift northeast, shifting a few feet each year. Regular sand absorbs heat and burns your feet by noon.

Gypsum doesn’t work that way.

It stays cool no matter what the thermometer says, which is why you can walk barefoot across these dunes in July without flinching.

How an ancient sea built this desert snowfield

About 250 million years ago, a shallow sea covered this part of New Mexico and left behind thick gypsum deposits in the rock.

When the climate warmed after the last Ice Age about 12,000 years ago, rain and snowmelt dissolved gypsum from the surrounding mountains and carried it down into the basin.

Because the Tularosa Basin has no outlet to the sea, all that dissolved gypsum collected in an ancient lake called Lake Otero. As the lake dried up, it left behind selenite crystals.

Wind broke those crystals into fine white grains, and the dunes grew from there.

Drive eight miles straight into the dunefield

Dunes Drive runs eight miles from the visitor center into the deepest part of the park. The first five miles are paved.

The last three run across hard-packed gypsum sand that most vehicles handle without any trouble. Give yourself more than 45 minutes for the round trip, because the scenery changes the deeper you go.

Vegetation thins, the dunes get taller, and by the time you reach the end of the road, there’s almost nothing around you but white sand in every direction.

Picnic tables, trailheads and outdoor exhibits line the route, so there’s reason to stop often.

Grab a saucer and ride the dunes down

Sand sledding works better here than you might expect.

The gypsum surface is softer than regular sand, and a waxed plastic snow saucer picks up speed quickly on a good slope. The visitor center gift shop rents and sells sleds, so you don’t need to bring your own.

Pick a dune with a long, gentle slope and a flat area at the bottom.

One thing to keep in mind: the sand stays cool, but the ground at the base of a dune can be hard-packed. Choose your run carefully, and it’s a good time for any age.

Five trails that range from flat strolls to serious desert hikes

The park has five trails and none of them follow a worn dirt path. Out in the open dunes, you navigate by spaced-out marker posts, so you stay aware of where you are.

The Playa Trail is a flat half-mile walk to a dry lakebed. The Dune Life Nature Trail is a 1-mile loop with plant and animal signs along the way.

If you want a real challenge, the Alkali Flat Trail runs about five miles round trip to the edge of the ancient lakebed, crossing open dunes with no shade and no shelter. Carry more water than you think you’ll need.

Walk the dunes at sunset with a park ranger

Rangers lead Sunset Strolls on a seasonal schedule, covering about a half mile through the dunes over 45 minutes to an hour. You meet near the Sunset Stroll sign parking area, about eight miles from the fee station.

The walk ends with the sun dropping behind the mountains while the sand holds the last of the light.

On select full-moon dates, the park extends evening hours for Full Moon Nights, and some of those include live music or ranger programs at the amphitheater.

Monthly Moonlight Hikes along the Dune Life Nature Trail sell out fast through Recreation.gov, so check the NPS schedule early.

Walk where a prehistoric lake built the dunes you’re standing on

Lake Lucero sits in the southwestern corner of the park, and this is where the whole process starts.

The dry lakebed is covered with exposed selenite crystals, the same crystals that wind breaks down into the white sand that builds the dunes.

Rangers lead tours here once a month from November through March, limited to about 50 people. The hike is 1.5 miles round trip over rough desert terrain.

Because part of the area falls within White Sands Missile Range, you can’t visit outside of these guided tours. Tickets go through Recreation.gov.

Meet the lizard that turned white to disappear

More than 800 animal species live in the park, and at least 45 of them are found nowhere else on Earth. Several evolved lighter coloring over thousands of years to blend into the white sand.

The bleached earless lizard is nearly pure white, and you’ll likely only spot it when it moves. The Apache pocket mouse never drinks water at all, pulling every bit of moisture it needs from seeds.

About 40 moth species are found only here, making White Sands one of the most studied sites for moth research in the country. Most mammals are nocturnal, so morning visits turn up more tracks than animals.

The oldest human footprints ever found in North America are here

Scientists found human footprints preserved in the park’s gypsum soil and dated them between 21,000 and 23,000 years ago. Multiple studies using different methods confirmed the range, including a 2025 study.

The prints were made along the shores of an Ice Age lake and include tracks from adults, teenagers and young children. Alongside them, researchers found tracks from mammoths, ground sloths and dire wolves.

These are among the oldest confirmed signs of humans in North America, pushing the timeline back by thousands of years. The footprint sites are closed to the public, but they’re part of what makes this ground remarkable.

The yucca that grows taller to outrun the dunes

The soaptree yucca is the plant you’ll photograph most here, its spiky green crown rising out of the white sand like something planted by hand.

As dunes pile up around the base, the yucca grows its stem taller to stay above the surface, sometimes reaching 30 feet. From late April through May, it pushes up tall stalks of large cream-colored flowers.

Native Americans used almost every part of the plant: the young flower stalks as food, the leaf fibers for rope and sandals, the roots boiled into soap.

The shallow water table, just one to three feet down, keeps these plants alive where almost nothing else can hold on.

What to know before the drive out

The park sits inside White Sands Missile Range, and closures for missile testing can happen with little notice. Check the closure schedule before you make the drive.

There’s no drinking water anywhere in the park except at the visitor center, so bring at least a gallon per person. The visitor center itself is a 1930s Pueblo Revival building with exhibits, a film and a gift shop.

Leashed dogs can come with you onto the dunes.

Backcountry camping is currently closed for site rehabilitation, with no announced reopening date, so check the NPS website if you’re planning to stay overnight.

Visit White Sands National Park in New Mexico

You can reach the park about 16 miles southwest of Alamogordo off U.S. Highway 70. The nearest major airport is in El Paso, Texas, about 90 minutes away.

Albuquerque is about 3.5 hours north. The park opens daily at 7 a.m. and closes one hour after sunset, except on Thanksgiving and Christmas. From late May through early September, hours extend to one hour after sunset.

There’s no public transportation to the park, so you’ll need a car. Admission fees and current information are on the official website.

This article was created with AI assistance and human editing.

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