Due east of Holbrook, Arizona, approximately 225 million years ago, tall, stately pine-like trees grew at the head waters of streams that crossed a vast flood plain. When they fell they were washed into the flood plain and were covered by a blanket of deposits and eventually converted by mineralization into a rainbow-colored rock- petrified wood. These colorful stone trees lie scattered through the nearly 100,00 acre Petrified Forest National Park, probably the largest forest of its kind in the world.

Visit the Petrified Forest National Park Forum to ask questions about the park.