Great Sand Dunes Wilderness
The wilderness area is entirely within Great Sand Dunes National Park located in the San Luis Valley of south-central Colorado. The nearest city is Alamosa (pop. 7,500) located about 35 miles to the southwest. From Alamosa take U.S. Highway 160 east about 16 miles and turn left onto Colorado Highway 150. From there it's 19 miles north to the Great Sand Dunes Visitor Center.