From Alamosa, two main routes lead to Great Sand Dunes. Go east 14 miles on U.S. 160, then north on Colo. 150; or drive north 14 miles on Colo. 17 to Mosca, then east on Six Mile Lane to the junction of Colo. 150.

The Nearest Airports -- The San Luis Valley Regional Airport, 2500 State Ave. (tel. 719/589-4848; www.alamosacounty.org), 3 miles off U.S. 285 South, has service to and from Denver on Great Lakes Airlines (www.greatlakesav.com). Car rentals are available at the airport from Budget and Hertz.

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.