Great Sand Dunes National Park and Preserve in southern Colorado is home to North America's tallest sand dunes, rising up to 750 feet against the rugged Sangre de Cristo Mountains. This unique landscape offers incredible opportunities for sandboarding and sand sledding down the massive dunes, hiking, and splashing in the seasonal Medano Creek. Beyond the dunes, the park encompasses diverse ecosystems including alpine lakes, forests, and wetlands, providing habitat for abundant wildlife and exceptional stargazing opportunities under vast, dark skies.