Petrified Forest National Park

(Arizona)

Park Hours: 8am to 6pm, MST. Don't forget that Arizona does not observe Daylight Savings. Petrified Forest is best known for its Triassic fossils. It's like having two parks in one, an ecosystem over 200 million years old with plants and animals now represented in the surreal landscape of the Painted Desert. There is also a living park with its own denizens adapted to a demanding environment.