Petrified Forest National Park

The Petrified Forest, a national park established in 1962 in eastern Arizona, is the world's largest display of fossilized trees. Dating from the Triassic Period, the felled trees were buried under sand and clay and gradually mineralized. Exposure to the air following erosion resulted in their coloration of primarily red and yellow. The park covers an area of 93,533 acres and reaches its highest elevation (6,230 feet) at Pilot Rock, near the north entrance. The park also encompasses the Painted Desert and several Indian ruins.