The sand at this New Mexico park isn’t sand at all, and once you know that, everything shifts

New Mexico’s wildest park isn’t what you’d expect

White Sands National Park sits in southern New Mexico between two mountain ranges, and the first time you see it, your brain takes a second to catch up.

The dunes stretch 275 square miles and glow so white that sunglasses feel mandatory even on overcast days. This isn’t ordinary desert sand.

It’s gypsum, and that difference changes everything about how this place looks, feels, and moves. The strangest part might be what’s buried beneath it.

The dunes are cooler than you think

Reach down and press your hand into the sand. It’s cool, not hot, and that surprises almost everyone.

Gypsum crystals reflect sunlight instead of soaking it in, so even on a 95-degree July afternoon, the sand won’t burn your feet. The dunes themselves range from 10 to 60 feet tall and don’t stay put.

The most active ones creep northeast at up to 30 feet per year, swallowing plants, roads, and anything left behind.

A shallow sea made all of this

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

Tectonic shifts later created the Tularosa Basin, a bowl-shaped valley with no river outlet, trapping water inside.

Rain and snowmelt carry dissolved gypsum down to Lake Lucero, a dry lakebed in the park’s southwest corner. When that water evaporates, selenite crystals form on the surface, some stretching three feet long.

Wind breaks them into grains and pushes them northeast, building the dunefield. The whole process took about 7,000 to 10,000 years.

The visitor center has its own story

Before you head into the dunes, walk through the visitor center.

Workers built it between 1936 and 1938 as a New Deal public works project using adobe bricks made on site.

Look up at the ceiling and you’ll see hand-hewn pine beams called vigas, along with carved wooden corbels and punched tin light fixtures that follow traditional New Mexican design.

The building was listed on the National Register of Historic Places in 1988. Inside, you can watch an orientation film and browse exhibits before picking up a sled.

Dunes Drive puts you inside the white

The 16-mile round-trip Dunes Drive starts at the visitor center and cuts straight into the dunefield. The first four miles are paved; the rest runs on packed gypsum sand, smooth enough for any vehicle.

Three picnic areas sit along the route, and trailheads branch off at regular intervals. Without stops, you can drive the whole thing in about 45 minutes, but almost nobody does.

The park sits inside White Sands Missile Range, so check the park website before you go. Occasional testing closes the road without much warning.

Five trails, zero shade

The park has five marked trails, and each one pulls you further into the dunes.

The Interdune Boardwalk covers 0.4 miles on a wheelchair-accessible path with signs explaining what lives between the dunes.

The one-mile Dune Life Nature Trail loops through varied terrain where you can spot animal tracks pressed into the sand. The Alkali Flat Trail runs about five miles out to the edge of an ancient dry lakebed.

None of the trails has shade. Carry more water than you think you’ll need, and stay close to the colored trail markers.

Sled the dunes like a kid

One of the best things you can do here costs almost nothing. Grab a waxed plastic disc sled from the gift shop and pick any dune you like.

Gypsum packs down after rain, making the surface faster and firmer than dry runs.

Early morning and late afternoon give you cooler air and softer light, which makes the white sand look almost gold at the edges. You can sled anywhere accessible from Dunes Drive, so find a dune with a long run and go.

The animals here changed color to survive

About 800 animal species live in the park, and some of them evolved faster than almost anything scientists expected.

Three lizard species developed lighter coloring to match the white sand, a shift that happened over just a few thousand years.

The bleached earless lizard is the palest of the three, with dark spots on either side of its head as the only contrast. The Apache pocket mouse never drinks water, pulling all its moisture from seeds.

The kit fox weighs about five pounds, hunts at night, and runs lighter in color than kit foxes anywhere else. At least 45 species live here and nowhere else on Earth.

Plants here grow upward to stay alive

The soaptree yucca figured out the only way to survive moving dunes: grow faster than the sand buries you.

As a dune advances, the yucca extends its stem toward the surface and keeps climbing, sometimes reaching 30 feet tall. Native Americans used nearly every part of the plant for food, rope, soap, baskets, and cloth.

The hoary rosemary mint takes a different approach, locking sand in place with deep roots until the surrounding dune blows away, leaving the plant on a raised pedestal. More than 300 plant species grow across the park.

Ice Age footprints in the gypsum

In 2021, scientists announced a find that changed the timeline of human history in North America.

Preserved in the gypsum-rich soil near ancient Lake Otero, they found 61 human footprints dated between 21,000 and 23,000 years old. A 2023 study using multiple dating methods confirmed the age.

Most of the prints came from teenagers and children, which suggests adults sent younger people across the landscape to carry out tasks.

Nearby tracks from mammoths, giant ground sloths, and dire wolves showed what else walked this basin during the Ice Age.

The moon turns the dunes silver

From May through October, the park stays open until 11 p.m. on Full Moon Nights.

Rangers give presentations at the outdoor amphitheater along Dunes Drive, and live music fills the desert air. Gypsum reflects moonlight so well that you can walk the dunes without a flashlight.

Separate Moonlight Hikes run monthly from March through November along the Dune Life Nature Trail and require reservations.

Sunset Strolls go out regularly, free of charge, ending with the sun dropping behind the mountains. On clear nights, the Milky Way stretches across the sky.

The park’s remote setting kept it intact

White Sands is open every day of the year except Christmas, with hours that shift by season.

White Sands Missile Range and Holloman Air Force Base wrap around the park on all sides, which kept commercial development out and the landscape intact.

The visitor center sits about 15 minutes from Alamogordo and an hour from Las Cruces. Leashed dogs can go on the dunes but not inside the visitor center.

The park gets about 10 inches of rain a year, mostly during afternoon thunderstorms from July through September. Fill your water at the visitor center.

There’s none available once you’re in the dunes.

Explore White Sands National Park in New Mexico

To walk the white dunes yourself, head to White Sands National Park off U.S. Highway 70 in southern New Mexico, between Alamogordo and Las Cruces.

The park opens daily year-round, with seasonal hours posted on the official website.

Admission fees apply, and the park may close temporarily for missile testing on the surrounding range, so check the site before making the drive. Sleds sell at the visitor center gift shop.

Get there early in summer before the heat peaks.

This article was created with AI assistance and human editing.

Read more from this brand:

• New Mexico’s ancient cliff village has 1,000 hand-carved rooms you can climb inside
• Carlsbad Caverns has 120 caves and 400,000 bats and most people only scratch the surface
• New Mexico hides a canyon road with hot springs, lava cliffs and pueblo ruins near Albuquerque