In late August, the U.S. Geological Survey quietly released a new tool that could reshape how Americans understand the ground beneath their feet. The Cooperative National Geologic Map, now live online ...

There is a 3,600 ton rock falling very, very slowly in Moab, Utah.

Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years. Mountains have been built and eroded, continents and oceans have moved ...

Thundereggs look like regular rocks from the outside, but contain intricate and colorful mineral patterns inside — often made ...

Rocks, boulders, bluffs and crags abound during a hike along the 1.5-mile Shaddox Hollow Trail at Hobbs State ...