While most come to see one of the world's largest concentrations of brilliantly colored petrified wood ... Forest open a window on an environment more than 200 million years old, one radically ...

Arizona's Petrified Forest and Saguaro National ... is its large amount of petrified wood. These are ancient trees which are over 200 million years old and date back to the end of the Triassic ...

The Petrified Forest National Park highlights the prehistoric aspects of the Grand Canyon State. Visitors can see dinosaur fossils and petrified wood while basking in the ... The Petrified Forest was ...

In August 1988, a woman named Tracie typed and mailed a letter to the superintendent of Petrified Forest National Park in Arizona. Enclosed were pieces of petrified wood that she and her ... twigs and ...