Petrified Forest National Park
- Vicinity: NW Arizona between I-40 and US 180
- US County of Apache County in Arizona
- US County of Navajo County in Arizona
- Hours: Open year round except Christmas, December 25. Park hours vary during the year, roughly 7:00am to 7:00pm
- Phone: (928) 524-6228
Petrified Forest is a Science Park!
Best known for globally significant Late Triassic fossils, the park attracts many researchers. Geologists study the multi-hued Chinle Formation. Archeologists research over 13000 years of history. Biologists explore one of the best remnants of native Arizona grassland. Air quality is an ongoing study in the park. Discover your own passion at Petrified Forest! - NPS