A surreal sea of pure white gypsum dunes — now a national park.
Photo: dconvertini · CC BY-SA 2.0 · via Wikimedia Commons
Few American landscapes are as otherworldly as White Sands: 275 square miles of brilliant, blinding-white gypsum sand rolling to the horizon in New Mexico's Tularosa Basin — the largest gypsum dunefield on Earth. Gypsum is common worldwide but almost never forms sand, which makes this rippling white sea genuinely one of a kind. (It was redesignated from a national monument to White Sands National Park in 2019 — the country's 62nd national park.)
The joy of it is simple and tactile: people sled the dunes on waxed plastic saucers (sold at the gift shop), drive the 8-mile Dunes Drive into the heart of the field, walk the accessible Interdune Boardwalk, and linger for sunsets that turn the sand pink and gold. The longer Alkali Flat Trail leads deep into the dune sea toward an ancient dry lakebed — marked only by posts, so it's easy to lose your way. Unlike dark sand, the white gypsum stays cool to the touch, so bare feet are fine even when the air is hot.
Two gotchas shape a visit. The park is wrapped by the active White Sands Missile Range, and US-70 and the park itself close for 1–3 hours during tests (sometimes announced only a day ahead) — always check before you go. And there are no services in the dunes, so bring plenty of water. The best months are October through May; summer middays are simply hot.
The signature activity — slide the firm dune faces on a waxed plastic saucer.
Insider tipBuy a sled (and wax) at the gift shop behind the visitor center; you can often sell it back. Snow sleds and cardboard don't work — you need the saucer and wax.
Plan a trip to this spot →The only road into the dunefield — an 8-mile drive from the entrance into the heart of the white sand, with pullouts, picnic shelters, and trailheads.
Insider tipThe last few miles are hard-packed gypsum (graded, drivable); round trip is about 45 minutes without stops.
Plan a trip to this spot →A short, fully accessible elevated boardwalk with interpretive panels — the easiest way to get out over the sand.
Insider tipGreat for all abilities and a quick intro before venturing onto the open dunes.
Plan a trip to this spot →The marquee hike — about 5 miles round trip deep into the dune sea to the edge of an ancient dry lakebed.
Insider tipMarked only by posts, so it's easy to get disoriented — follow the markers, carry water, and turn back if you lose the trail.
Plan a trip to this spot →A ~1-mile loop introducing the plants and animals adapted to the gypsum — a good family-friendly first walk on the sand.
Insider tipA gentler taste of the dunes than the Alkali Flat.
Plan a trip to this spot →Ranger-led sunset strolls and seasonal full-moon nights and star parties — sunset turns the white field pink and gold, the iconic photo moment.
Insider tipCheck the program schedule; full-moon nights book up.
Plan a trip to this spot →High Chihuahuan Desert (~4,000 ft): hot summers, mild winters, a big day-night swing, and a dry climate with a July–September monsoon. Spring is notoriously windy with blowing sand. A key comfort note — the white gypsum reflects heat and stays cool to the touch (it won't burn bare feet), but the air is still very hot at midday, so hike early or late and carry plenty of water. Best months: October through May.
One entrance off US-70 — but the missile range can close the road and park for a few hours.
About 15 minutes southwest of Alamogordo on US-70 (between Las Cruces and Alamogordo), $25/vehicle. ⚠️ US-70 and the park close for 1–3 hours during White Sands Missile Range tests, sometimes announced only ~24 hours ahead — check the park's conditions page or call before you go. No services in the dunes: bring water.
No developed lodging or campground — stay in nearby towns.
The closest base (~15 min), with the full range of hotels, dining, and gas — and the New Mexico Museum of Space History.
Booking tipThe practical home base.
A larger city about an hour southwest on US-70, with more lodging and dining.
Booking tipA good base if you're coming from the west.
A cool pine-forest mountain town (~45 min, ~8,600 ft) for a dramatic climate contrast.
Booking tipA scenic alternative escape from the desert heat.
Is it a national park or a monument?
It's a national park — White Sands National Park since December 2019, when Congress redesignated the former White Sands National Monument (established 1933).
What's the entrance fee?
$25 per private vehicle, good for 7 days ($20 motorcycle, $15 per person on foot or bike; under 16 free). The America the Beautiful pass is accepted.
Can I go sledding?
Yes — it's the top activity. Buy a saucer sled and wax at the gift shop behind the visitor center (or bring your own), wax the bottom, and find a steep dune face.
Will missile testing close the park?
It can. US-70 and the park close for 1–3 hours during White Sands Missile Range tests, sometimes announced only about a day ahead. Check the park's conditions page or call before driving out.
When should I go?
October through May for mild weather. Avoid summer middays — the sand stays cool underfoot but the air is hot, so hike early or near sunset. Spring is very windy.
How do I not get lost on the dunes?
On the open dunes, landmarks vanish. Stay on the marked trails (especially the 5-mile Alkali Flat), follow the posts, and carry far more water than you think you'll need — there's no water or shade out there.
Pick your vehicle, line up the stops on the way in and out, and carry the whole route in your pocket.
