Thanks to images in publications such as this and all across the internet, we know what to expect when we arrive at Great Sand Dunes National Park & Preserve. But imagine the early, unsuspecting ...

Related: See all the best images of Earth from space A group of five barchan, or "horned," sand dunes can be seen in a zoomed-in version of the 2013 photo (see below). Over time, these arrowhead ...

A new study led by the University of Southampton and research institutes in France has uncovered the mystery of how mini sand dunes form on beaches and in deserts. While the formation of large ...