The Yellowstone region's Beartooth Mountains feature some of the most ancient rocks in North America — as old as 3.96 billion ...

Yellowstone volcanism has produced some of the youngest rocks in North America. This same region also features some of the ...

The Yellowstone Caldera is often referred to as the Yellowstone Supervolcano due to its colossal size; it's one of the ...

For Ana Steffen, the most stunning elements of Valles Caldera National Preserve lay beneath the majestic, prehistoric landscape that captivates most visitors. Obsidian — a black, crystalline ...

We know that a supervolcano, Yellowstone, is located practically in our backyard. The region is constantly going through geological changes, as there was a recent discovery of a new volcanic vent in ...

The Bureau of Land Management is extending the public comment period for proposed lithium exploration project in the McDermitt Caldera near Nevada in Malheur County, Oregon. If ...