Petrified Forest National Park
Photograph by Finetooth, via Wikimedia Commons
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Petrified Forest National Park

Located in northeastern Arizona, Petrified Forest National Park has large deposits of petrified wood. The forest is known for fossils of fallen trees that lived about 225 million years ago. The forest features semi-desert shrub steppe as well as highly eroded and colorful badlands. Petrified Forest is popular site for paleontology and other sciences in the field. Park activities include hiking, bicycling, and horseback riding.