magical skies and rare rocks of the petrified national forrest, az, usa

arid arizona basin bend boulders cactus canyon canyons cliff cloudscape colorado contrasting dams deposits desert dry expanse face flash flood forest forrest glenn gorge horseshoe impressive landscape magical martian mineral mountains movies national navajo open page perfect petrified picture pnf rare red river rock rocks rugged sandstone scenic skies sky snow sunshine usa vermillion weather western wide wilderness wildflowers