Great Sand Dunes National Park and Preserve is open 24 hours a day, seven days a week. The Visitor Center is open 7 days a week except for federal holidays in winter. Hours at the Visitor Center vary seasonally, but are generally 9-4:30 daily in winter, and 8:30-6 daily during the three summer months.
[{"major_rivers": "n/a", "swimming_allowed": "n/a", "size": "n/a"}]
[{"major_rivers": "n/a", "swimming_allowed": "n/a", "size": "n/a"}]