Snow turns sand dunes in Colorado national park into ‘ethereal world.’ See transformation
A unique combination of sand and snow transformed a Colorado national park into an otherworldly winter wonderland, a stunning ...
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Sand or snow, sled down the dunes at Silver Lake State Park
Known as a summertime staple, Silver Lake Sand Dunes is open for winter hiking, fat-tire biking, snowshoeing and sledding.
Researchers study 'complex' sand dune changes
Researchers find some dune systems are significantly retreating, with other growing at a similar rate.