White Sands National Park
Where the desert mirrors the heavens.The world's largest gypsum dunefield spans 275 square miles of stark white sand in southern New Mexico. Visitors can hike or sled down rolling dunes amid the Chihuahuan Desert.
White Sands National Park in New Mexico contains the world's largest gypsum dune field, with pure white sand stretching across 275 square miles of desert. Climb to the top of 60-foot dunes, sled down their steep faces, or join a ranger on a nighttime walk under the full moon. The park sits within an active missile testing range, adding an unexpected element to this natural landscape where white-tailed lizards and desert mice have evolved to match their bright surroundings.
Exploring the White Dunes
Gypsum crystals break down and travel with the wind to form the distinctive dunes of White Sands. Unlike quartz sand, gypsum maintains its bright white color through rainfall, creating an ever-changing landscape of dunes reaching up to 60 feet high. Drive the 8-mile Dunes Drive to access multiple viewpoints and trailheads throughout this stark white terrain.
Getting Around the Park
Bring your own plastic sled or get one at the visitor center to slide down the dunes. Look for the steeper slopes away from plants - park rangers will point you toward safe sledding areas. Five marked hiking trails cross the dune field, from the 0.2-mile Playa Trail to the more demanding 4.5-mile Alkali Flat Trail, each revealing different aspects of this desert ecosystem.
Ranger Programs and Night Activities
Join rangers every evening for sunset walks, or sign up for monthly full moon hikes from April through October. These guided walks explain the park's geological formation, wildlife adaptation, and human history. Full moon hikes require advance booking and cost $8 for adults, $4 for children. From November to April, you can visit Lake Lucero to see selenite crystals forming in the dry lakebed.
Planning Your Visit
The park welcomes visitors year-round except December 25, though missile tests at White Sands Missile Range occasionally close the area temporarily. Visit early morning or late afternoon during summer when temperatures often exceed 95°F (35°C). The 1938 Pueblo Revival visitor center houses exhibits on local geology and ecology. Pack water, sunscreen, and a hat - the dune field has minimal shade. You can reach the park from nearby Alamogordo and Las Cruces, with El Paso serving as the closest major airport.
Wildlife and Adaptations
The dunes support 44 species of mammals, including kit foxes and pocket mice, plus numerous lizards and insects. Many animals here have evolved lighter coloring to blend with the gypsum sand. Plants like the soaptree yucca and skunkbush sumac grow extensive root systems to anchor themselves in the moving sand, creating stable areas within the shifting dunes.
