Yva Momatiuk & John Eastcott / Colorful sandstone patterns of lines, ridges and ripples, carved by erosion, are reflected in rainwater pool, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Toadstool Caprocks created by erosion, near Paria River, Grand Staircase-Escalante National Monument, Utah

Yva Momatiuk & John Eastcott / Petrified wood log with intricate patterns and colors, Petrified Forest National Park, Arizona

Yva Momatiuk & John Eastcott / Organ Pipe Cactus (Stenocereus thurberi) with many stalks, spring evening, during drought year, Organ Pipe Cactus National Monument, Arizona

Yva Momatiuk & John Eastcott / Gila Woodpecker (Melanerpes uropygialis) nesting in Saguaro (Carnegiea gigantea) in desert, spring, Sonoran Desert National Monument, Arizona

Yva Momatiuk & John Eastcott / Black-tailed Prairie Dog (Cynomys ludovicianus) eating grass in summer, Devil's Tower National Park, Wyoming

Jeff Foott / Painted Hills, John Day Fossil Beds National Monument, Oregon

Jeff Foott / Painted Hills, John Day Fossil Beds National Monument, Oregon

Jeff Foott / Painted Hills, John Day Fossil Beds National Monument, Oregon

Jeff Foott / Golden Bee Plant (Cleome platycarpa) flowerings, Painted Hills, John Day Fossil Beds National Monument, Oregon

Jeff Foott / Painted Hills, John Day Fossil Beds National Monument, Oregon

Jeff Foott / Painted Hills, John Day Fossil Beds National Monument, Oregon