The current 346 square miles of Petrified Forest open a window on an environment more than 200 million years old, one radically different from today's grassland. Where you now see ravens soaring ...

Hike up the Lenox Crater at Sunset Crater Volcano National Monument and explore ... including three major ones (Saguaro, ...

Petrified Forest National Park offers unexplored badlands ... But Arizona does contain its unique volcano field, one that displays amazing scenery while providing enduring geological mysteries ...