An impactor of this size, known as a "city ... "eye-catching" impact crater in the Sahara Desert. The oculus-like structure is surrounded by migrating sand dunes that are capable of traveling ...

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 ...

This 2023 astronaut photo shows a series of slowly moving "star dunes" in the Erg Chebbi region of Morocco. Most of these ...

This enormity isn’t just about size; it's a testament to nature ... can drastically alter landscapes and lives. The Sahara’s sand dunes don’t just roll languidly on the horizon; they ...

Sand dunes are formed in the Sahara Desert in the image above ... Human activity and drought conditions are leading concerns for Australia’s basins size reduction. The spatial analysis will ...

Bechir Belhad sits on Saharan sand dunes ... the vastness of the Sahara Desert. Yet with hundreds and hundreds of miles of golden sand stretching out before us, the size of our target wasn ...