Craters of the Moon National Monument is desolate but 2,200 years ago, it was the site of today's Yellowstone Hotspot, known for violent eruptions and huge craters. Constantly shifting due to tectonic activity, will Yellowstone one day resemble this lifeless place...when the Hotspot moves again?

Montana's Hell Creek Formation is home to a trove of late Cretaceous fossils unlike any other in the world, revealing the last days of the great dinosaurs. Researchers have now found a complete Triceratops skull that may reveal on of the last prehistoric battles before dinosaurs vanished forever.

There are places in Greater Yellowstone where the snow never melts, or at least, it never used to. Climate change is causing Yellowstone’s ice patches to recede, so many archaeological treasures—if not rescued—will disintegrate within days.

Greater Yellowstone sits on top of a volcanic hot spot where devastating geological events unfolded. The result? A bizarre cemetery of fossilized forests that contain the remains of trees that died from molten lava, ash, and mud around 50 million years ago.