but have you ever hiked 600-foot-high sand dunes? Kelso Dunes offers a unique physical challenge to hikers looking for a rewarding view of the desert panorama. The National Park Service highlights ...

Ralph Bagnold, a Cambridge-educated engineer in the British Army, explored the Sinai and Sahara on leave before drafting his 1941 masterwork The Physics of Blown Sand and Desert Dunes, which is ...

We flew from Beijing to Lanzhou and then drove to a town near the edge of the desert to meet our camel team. We camped in the sand the last night before setting off into the dunes. I didn’t ...

This intriguing astronaut photo shows around a dozen giant "star dunes" as they slowly dance across a sandy field near the ...