The Great Sand Dunes National Park and Preserve is located in southern Colorado.

The Great Sand Dunes National Park and Preserve is home to the tallest dunes in North America, some reaching heights of 750 feet. This natural wonder is nestled at the base of the Sangre de Cristo Mountains near Alamosa, Colorado. Visitors are drawn to the park for sandboarding, sledding, hiking, and exploring the diverse ecosystems, which include wetlands, forests, and alpine tundra. The dunes were formed over thousands of years from sand deposits carried by winds and water, making the park an extraordinary geological and recreational destination in the Southwest.