PETRIFIED FOREST NATIONAL PARK: PUERCO PUEBLO PHOTO GALLERY. Petrified Forest NP in Northern Arizona has some terrific areas of Petroglyphs. These photos are from the overlook Puerco Pueblo and the wash in front of it. You are not allowed to drive down the dirt road in this wash, but you can walk down it. For more information, click HERE. Click on the first thumbnail to see larger image. Use controls at bottom of each large image to start slide show or go through manually with arrow keys.