From White Sands and the Great Sand Dunes to Bryce, Bisti, Bonneville, and Petrified Forest, these 10 U.S. landscapes feel almost extraterrestrial, shaped not by lava but by gypsum, salt, sandstone, ...

Grab your lab coat, or at least pretend you have one, and prepare to zoom way, way in because we’re about to explore a world ...

America's geological wonders don't need erupting volcanoes to create breathtaking spectacles that look straight out of a science fiction movie. From towering mushroom-shaped rocks to mysterious moving ...

The rocky formations in northern Chile resemble alien landscapes. The terrain is dry with sharp textures and deep shadows.