Jack Dykinga / Bands of red and yellow strata in petrified sand dunes, sunset, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

Jack Dykinga / Petrified sandstone formation with bold striated patterns and lichen covered stones, Paria Canyon-Vermilion Cllffs Wilderness, Arizona, USA

Jack Dykinga / Paria Canyon's walls with mud patterns indicating former river channel, Navajo sandstone, Vermilion Cliffs National Monument, Arizona, USA

Jack Dykinga / Clouds reflected in pool of rain water in petrified sand dune formation, Paria Canyon-Vermilion Cliffs Wilderness, Colorado Palteasu, Arizona, USA

Jack Dykinga / Petrified sand dunes with eroded cross hatch sandstone strata at dawn, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA with first winter snow and Juniper bushes {Juniperus osteosperma}

Jack Dykinga / Petrified sand dunes with eroded sandstone striations at sunset, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

Jack Dykinga / Petrified sand dunes with eroded red and yellow sandstone bands, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA, and Pointleaf manzanita {Arctostaphylos pungens}

Jack Dykinga / Mixed colour clays and wave patterns against canyon formations, Paria Canyon, Arizona, USA

Jack Dykinga / Petrified sand dunes with eroded sandstone at sunset, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

Tim Fitzharris / Detail of The Wave, a Navajo sandstone formation in Paria Canyon-Vermilion Cliffs Wilderness, Arizona

Tim Fitzharris / Detail of The Wave, a Navajo sandstone formation in Paria Canyon-Vermilion Cliffs Wilderness, Arizona

Jack Dykinga / Flowering Alcove columbines {Aquilegia micrantha} Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

Jack Dykinga / Petrified sand dunes with eroded sandstone flakes at sunset, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

Jack Dykinga / Petrified sand dunes with eroded sandstone bands, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

Jack Dykinga / Petrified sand dunes with eroded sandstone bands, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

Jack Dykinga / Petrified sand dunes with eroded sandstone bands in swirl patterns from mineral deposits, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

Jack Dykinga / Delicate sandstone fins of petrified sand dune, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA with flowering Pointleaf manzanita {Arctostaphylos pungens}

Jack Dykinga / Petrified sand dunes with eroded sandstone bands and rain-filled pot holes, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

Jack Dykinga / Rock carvings / petroglyphs on boulders near Lee's Ferry, Paria Canyon, Arizona, USA

Jack Dykinga / Sunflowers {Helianthus sp} flowering on petrified sand dune formations of Colorado plateau, Paria Canyon / Vermilion Cliffs Wilderness, Arizona, USA

Jack Dykinga / Hiker amongst sand stone cliffs and wave ripple patterns, Paria Canyon, Arizona, USA

Jack Dykinga / Petrified sand dunes with eroded yellow and red sandstone bands, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA

David Welling / Sandstone formations near Paria Canyon, Utah, USA

David Welling / Sandstone cliffs and chinle formations at sunset, near Paria Canyon, Utah, USA

David Welling / Buckskin sandstone formations at sunrise, Paria Canyon, Utah, USA

Jeff Foott / Full moon at dawn over Vermillion Cliffs, Paria Canyon, Arizona, USA

Yva Momatiuk & John Eastcott / Erosion sculpted, petrified sand dunes, Canyon Cliffs, boulders and hoodoos, desert near Paria River, Grand Staircase-Escalante National Monument, Utah

Yva Momatiuk & John Eastcott / Erosion sculpted, petrified sand dunes, Canyon Cliffs, boulders and hoodoos, desert near Paria River, Grand Staircase-Escalante National Monument, Utah

Gerry Ellis / Wind sculpted Colorado sandstone, Paria Canyon, Vermilion Cliffs Wilderness, Arizona

Gavin Hellier / Vermillion Cliffs NM Paria Canyon Arizona USA

David Welling / Sandstone and chinle rock formations. Paria Canyon, Utah, USA

Gavin Hellier / Petrified Dunes, Vermillion Cliffs NM, Paria Canyon, Arizona, USA

Yva Momatiuk & John Eastcott / Swirls, layers and folds of Navajo sandstone create wild rocky landscape on Colorado Plateau, Paria Wilderness Area, autumn, Arizona

Yva Momatiuk & John Eastcott / Brain-shaped bulges dominate undulating slope of Navajo sandstone, on Colorado Plateau, Paria Wilderness Area, autumn evening, Arizona