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Petrified Forest, United States
Petrified Forest National Park preserves one of the world's largest concentrations of petrified wood — trees from the Late Triassic period, 225 million years ago, that were buried in sediment and slowly replaced by silica minerals, turning to stone while preserving cellular detail. The park also encompasses a section of the Painted Desert, where layers of bentonite clay create striped badlands of red, purple, blue, and gray.
explore by interest
Removing any petrified wood is a federal offense. The park's 28-mile scenic road connects all major sites — short trails branch off at each stop. No backcountry water is available.
March through May and September through November. Summer temperatures exceed 100°F with little shade. Spring wildflowers bloom after wet winters.