This striking astronaut photo shows off an "eye-catching" impact crater in the Sahara Desert. The oculus-like structure is surrounded by migrating sand dunes that are capable of traveling more ...

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 ...

Star dunes - sometimes called pyramid dunes - stand out among sand dunes for their towering height and eye-catching form.

When you think of towering sand dunes, your mind probably drifts to the Sahara or perhaps Colorado's Great Sand Dunes National Park, known for its unique alien-like landscape. However, North ...

The Sahara strikes us as an eternal inferno of dunes and blue sky ... The past survives here and speaks from the sand, rock, heat, and dry winds. It whispers to us about a history of repeated ...

The belt the company named “The Dune Express ... from a mine in Western Sahara on the northwest coast of Africa, according to NASA Earth Observatory. When moving sand by truck became a ...

This field of open, windswept sand — or erg — covers around ... by flat lowlands but contains some of the tallest dunes in the Sahara, making it stand out like a mountain range when viewed ...

Deserts, including the Sahara, are expanding at unprecedented rates and “sand seas” are being reactivated, with blowing dunes transforming landscapes where vegetation once stood.

The rugged and beautiful Greek island of Lemnos is home to a desert in the Gomati area, to the island's north.

Water rushing between the sand dunes of southern Morocco ... August and September have given a different face to the Moroccan Sahara, better known for its frequent droughts.

These dunes are the reason Piscinas has been nicknamed the “Little Sahara of Italy” and has some of the highest sand dunes in Europe. Piscinas is surrounded by sand dunes formed by the ...