David Noton / Flamingos on Laguna / Lake Colorada at dawn, Eduardo Avaroa Andean Fauna National Reserve, Bolivia, December 2009

Jack Dykinga / Desert varnish coloured canyon walls in Navajo sandstone cliffs showing drip marks across cliff face, Colorado Plateau, Arizona, USA

Jack Dykinga / Concretion balls lining fracture lines in petrified sand dune formation, with lichen scaring calcification marks, Colorado Plateau, Arizona, USA

Jack Dykinga / Striated sandstone patterns in petrified sand dunes caused by erosion, Vermilion Cliffs National Monument, Colorado Plateau, Arizona, USA

Jack Dykinga / Eroded striated sandstone (petrified sand dunes) Vermilion Cliffs National Monumant, Colorado Plateau, Arizona, USA

Jack Dykinga / Eroded striated sandstone (petrified sand dunes), Vermilion Cliffs National Monumant, Colorado Plateau, Arizona, USA

Jack Dykinga / Eroded sandstone (petrified sand dunes) in banded striated patterns at sunset, Colorado Plateau, Arizona, USA

Jack Dykinga / Eroded striated sandstone with round concretions strewn in geometric patterns, dawn, Vermilion Cliffs National Monument, Colorado Plateau, Arizona, USA

Jack Dykinga / Eroded sandstone (petrified sand dunes) in banded striated patterns at sunset, Colorado Plateau, Arizona, USA

Yva Momatiuk & John Eastcott / Lone hiker walking along the base of a sandstone butte strong pattern of wavy lines in petrified sand dunes are exposed by erosion, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Lone hiker walking along the base of a sandstone butte strong pattern of wavy lines in petrified sand dunes are exposed by erosion, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Lone hiker walking on colorful sandstone strong pattern of wavy lines in petrified sand dunes are exposed by erosion, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Small sandstone canyon carved by water, exposes strong pattern of parallel lines, Vermilion Cliffs National Monument, Colorado Plateau, Utah

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

David Welling / Rock arch in Colorado plateau. Arches NP, Utah, Turret Arch

Tim Fitzharris / Mittens, North Window, Monument Valley, Arizona

Tim Fitzharris / Church Rock, Monument Valley, Arizona

Tim Fitzharris / Moon over mittens, Monument Valley, Arizona

Yva Momatiuk & John Eastcott / Sandstone buttes, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone buttes, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone formations, Vermilion Cliffs National Monument, Colorado Plateau, Utah

David Welling / Sandstone patterns in rock formations, Colorado Plateau, Utah, USA

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

Tim Fitzharris / Sand dunes at Monument Valley Navajo Tribal Park, Arizona

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

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

Doug Allan / James (Phoenicoparrus jamesi) and Andean flamingoes (Phoenicoparrus andinus) on Lago Colorado at 4200m in Andes, Bolivia

David Welling / Sandstone patterns in rock formations, Colorado Plateau, Utah, USA

Doug Allan / Lago Colorado, showing white mineral deposits and red dinoflagellates, 4200m altitude, Andes, Bolivia

Doug Allan / James (Phoenicoparrus jamesi) and Andean (Phoenicoparrus andinus) flamingoes with ice on Lago Colorado at 4200m in Andes, Bolivia

Pete Oxford / James's flamingos {Phoenicoparrus jamesi} Laguna Colorado, Bolivia

Doug Allan / Aerial view of Lago Colorado at 4200m altitude, red colour is dinoflagellates, the white is salt, Bolivia, South America

John Cancalosi / Endemic Uncompahgre fritillary butterfly (Boloria improba acrocnema) habitat above timberline, San Juan Mountains, South West Colorado USA. Species only discovered in 1984 and is now endangered.

David Welling / Looking through Turret Arch, Arches NP, Colorado Plateau, USA

David Welling / Looking through Turret Arch, Arches NP, Colorado Plateau, USA

RHONDA KLEVANSKY / James flamingoes on Laguna Colorado {Phoenicoparrus jamesi} Bolivia, South America.

Doug Allan / James flamingoes on Lago Colorado {Phoenicoparrus jamesi} Bolivian Andes, 4200m

Yva Momatiuk & John Eastcott / Colorful sandstone with strong pattern of wavy lines exposed by erosion, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Colorful sandstone, with strong pattern of wavy lines exposed by erosion, Vermilion Cliffs National Monument, Colorado Plateau, Utah

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 / Colorful sandstone patterns of petrified sand dunes and ridges created by erosion, near Paria River, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Colorful sandstone patterns of petrified sand dunes and ridges created by erosion, near Paria River, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Colorful sandstone buttes with strong pattern of wavy lines exposed by erosion, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone buttes, petrified and folded ancient sand dunes, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone buttes, petrified and folded ancient sand dunes, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Sandstone buttes, petrified and folded ancient sand dunes, Vermilion Cliffs National Monument, Colorado Plateau, Utah

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

Doug Allan / Lago Colorado at 4200 m in Andes, Bolivia. Dinoflagellates (red) and mineral salts (white).

Doug Allan / Lago Colorado, Andes, Bolivia. showing white minerals in lake. 4200m

Doug Allan / Lago Colorado at 4200 m in Andes, Bolivia. Dinoflagellates (red) and mineral salts (white).

John Cancalosi / Pika habitat, talus slope near timberline. Colorado, USA

John Cancalosi / North American pika (Ochotona princeps) storing food for winter. Colorado, USA

John Cancalosi / North American pika (Ochotona princeps). Colorado, USA

Yva Momatiuk & John Eastcott / Sandstone formations of pinnacles, buttes and ravines, Coyote Buttes, Arizona

Yva Momatiuk & John Eastcott / Sandstone formations, Colorado Plateau, Coyote Buttes, Arizona

Yva Momatiuk & John Eastcott / Sandstone formations of pinnacles, buttes and ravines, Coyote Buttes, Arizona

Yva Momatiuk & John Eastcott / Sandstone formations, Colorado Plateau, Coyote Buttes, Arizona

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

Yva Momatiuk & John Eastcott / Colorful sandstone with strong pattern of wavy lines exposed by erosion, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Colorful sandstone with strong pattern of wavy lines exposed by erosion, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Small canyon carved by water showing colorful patterns of sandstone lines and ridges, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Colorful sandstone patterns of petrified sand dunes and ridges created by erosion, near Paria River, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Colorful sandstone patterns of petrified sand dunes and ridges created by erosion, near Paria River, Vermilion Cliffs National Monument, Colorado Plateau, Utah

Yva Momatiuk & John Eastcott / Colorful sandstone patterns of petrified sand dunes and ridges created by erosion, near Paria River, Vermilion Cliffs National Monument, Colorado Plateau, Utah