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The 16-mile Dunes Drive loops through the "heart of sands" from the visitor center. Information available at the center tells you what to look for on your drive. Sometimes the winds blow the dunes over the road, which must then be rerouted. All the dunes are in fact moving slowly to the northeast, pushed by prevailing southwest winds, some at the rate of as much as 20 feet per year.

In the center of the monument, the road itself is made of hard-packed gypsum. (Note: It can be especially slick after an afternoon thunderstorm, so drive cautiously!) Visitors are invited to get out of their cars at established parking areas and explore a bit; some like to climb a dune for a better view of the endless sea of sand. If you'd rather experience the park by hiking than on the long drive, try the Big Dune Trail, a good trail right near the entrance. It takes you on a 45-minute loop along the edges of the dunes and then into their whiteness, ending atop a 60-foot-tall one.

In summer, ranger-guided nature walks and evening programs take place in the dunes.

Safety Tips -- The National Park Service emphasizes that (1) tunneling in this sand can be dangerous because it collapses easily and could suffocate a person; (2) sand-surfing down the dune slopes, although permitted, can also be hazardous, so it should be undertaken with care, and never near an auto road; and (3) hikers can get lost in a sudden sandstorm if they stray from marked trails or areas.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.