Along Interstate 40 in Northern Arizona, Petrified Forest National Park is just a few hours east of Grand Canyon Nation ...

Gazing across the Painted Desert of northern Arizona today, it’s hard to believe that 200 million years ago the region was a primeval tropical forest watered by abundant streams and inhabited by a ...

Petrified Forest National Park is the only national park in the U.S. with a section of old Route 66. The park is also home to a "rainbow" forest, which has colorful tree fossils that are more than 200 ...

A remarkable finding has surfaced in the colorful, fossil-rich badlands of Arizona’s Petrified Forest National Park: North America’s oldest known pterosaur. The newly identified species — a flying ...

Petrified Forest National Park in Arizona. If you’re on a mission to visit some of the most underrated national parks across the U.S., you should probably have Petrified Forest on your radar. The ...