
Yellowstone National Park is famous for its unparalleled beauty, but there's much, much more happening in this breathtaking spot.
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.
Montana's Hell Creek Formation is home to a trove of late Cretaceous fossils, revealing the last days of the dinosaurs; researchers have found a complete Triceratops skull that may reveal one of the last prehistoric battles before dinosaurs vanished.
The Greater Yellowstone Area was once a rich grazing ground for huge Columbian mammoths; now, it's a prime hunting ground for paleontologists and archaeologists to study the remains of these beasts.
Devastating geological events created a bizarre cemetery of fossilized forests.