This story appears in the November 2012 issue of National Geographic magazine. I got my first lesson in the physics of sand dunes in 1998 on an expedition into the Sahara. In order to take aerial ...

For thrill-seekers wanting to explore the vast, mysterious landscapes of deserts, hidden hiking trails are the way to go ...

Snow Canyon State Park is comprised of volcanic cinder cone, sand dunes, deep red and white sandstone cliffs, and twisted layers of rock. Hollywood has recognized it as a brilliant backdrop in ...

This giant sand dune in southern Spain is about 98 feet high and 656 feet wide, making it one of Europe's largest sand dunes. What is perhaps even more fascinating is what hides beneath it.