The Aïr Mountains stand out, aesthetically and geologically, from the surrounding low-lying plains to support unique wildlife.
Published Dec 22, 2018
Scattered in a sea of sand, inselbergs in Namibia host ecology uniquely influenced by fog.
Published Sep 4, 2018
The massive dunes and numerous lakes of the Badain Jaran Desert are an enigma to scientists.
Published Nov 22, 2014
Like islands of stone surrounded by a sea of sand, the Aïr Mountains sustain a vibrant pocket of life in the Sahara.
Published Dec 4, 2013
Acquired November 13, 2002, this false-color image shows part of the Ouachita Mountains in southeastern Oklahoma.
Published Oct 24, 2010
The Sangre de Cristo Mountains of south-central Colorado stretch dramatically from top left to lower right of this astronaut photograph. The mountains are outlined by dark green forests at lower elevations and white, snow-capped peaks at the highest elevations. Dun-colored dunes are banked up on the west side of the mountains. These dunes make up the Great Sand Dunes National Park and Preserve.
Published Jan 21, 2008
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