Downtown Denver from Red Rocks Amphitheatre, Colorado, USA
Downtown Denver from Red Rocks Ampitheatre, Colorado, USA
Sandstone specimen
Fallenbacher Turm, Lechtal Alps, Austria
Annular solar eclipse, Red Rocks, USA
Barringer Crater
Courthouse Butte Rock Formation, Sedona, Arizona, USA
View of Cathedral Rock in Distance, Sedona, Arizona, USA
Geological fault near Denver, Colorado, USA
Red Rocks Canyon, Arizona
Red Rock Canyon
Cathedral Rock
Monument Valley rock formations, USA, aerial photograph
Concretion of sand and iron on Dinosaur Ridge, Colorado, USA
Flag iris (Iris sp.)
Spider Rock
Rock Formations, Sedona, Arizona, USA
Rock Formations and Sky, Sedona, Arizona, USA
Devil's Slide
Horseshoe Bend, Colorado River
Calaverite, Colorado, USA
Canyons, Arizona, USA, aerial photograph
Rock formations, Arizona, USA, aerial photograph
River flowing through canyon, aerial photograph
Deep canyon, aerial photograph
Vermilion cliffs, Arizona, USA, aerial photograph
Red Rocks State Park, Sedona, Arizona, USA
View of Cathedral Rock from Hiking Trail, Sedona, Arizona, USA
Cathedral Rock Formation, Sedona, Arizona, USA
Lake Powell, Arizona, USA, aerial photograph
Mudheads of Blue Canyon, Arizona, USA
Petzite, Colorado
Acanthite, Colorado
Aerial view of park built above highway, Denver, Colorado, USA
Slot canyon
Prickly pear cactus (Opuntia sp.)
Rough mule ears (Wyethia scabra)
USA, California, Eroded rock arch
USA, California, Rocky hills landscape
Geological map of the USA
Gearksutite, Colorado, USA
Downtown Denver in the Evening
Elevated view of the Painted Desert rock formations in the Petrified Forest National Park
The coloured strata of the Painted Desert rock formations in the Petrified Forest National Park
Eroded sandstone
Horseshoe Bend on the Colorado River, USA
The American antelope canyon
USA, Utah, North Coyote Buttes, Striped red rock, close-up, full frame
USA, Utah, South Coyote Buttes, Sandstone rock, close-up, full frame
Canyon de Chelly Desert landscape
Landscape Detail of Grand Canyon National Park, Arizona, USA
Redwall Limestone, Grand Canyon, Arizona
Painted Desert, Arizona, USA, aerial photograph
Rock formation called The Finger of Allah, Libya.
Tin Ghalega rock formation, Libya
Ghalega rock formation perching on h palm frond
Ash tree (Fraxinus excelsior) growing in limestone pavement
Downtown Office Buildings
Lunar rock sample
Clear Creek, Colorado, USA
Arid landscape
Perlite, Arizona, USA
Native Copper, Arizona, USA
Kinoite, Arizona, USA
Mike O'Callaghan-Pat Tillman Memorial Bridge, USA
Mudheads of Blue Canyon in Arizona, USA
Rock concretions
USA, Arizona, Sedona, waterfalls in Oak Creek Canyon, blurred motion
View of the Painted Desert/Petrified Forest National Park
Curving road through the Painted Desert
Petrified Forest at dusk
Fossilized trees at Petrified Forest National Park, Arizona
Expansive view of the Painted Desert
Eroded mound at Petrified Forest National Park
Boulders and earth pile, Petrified Forest National Park
Sandstone rock strata
USA, Arizona, Page, Paria Canyon, Vermillion Cliffs Wilderness, Coyote Buttes, red stone pyramids and buttes
USA, Arizona, Page, Paria Canyon, Vermillion Cliffs Wilderness, Coyote Buttes, structures in sandstone
View over the landscape of the Painted Desert rock formations in the Petrified Forest National Park
The landscape of the Painted Desert and valley in the Petrified Forest National Park
View into a valley of the Painted Desert rock formations in the Petrified Forest National Park
USA, Arizona, Upper Antelope Canyon, Sunbeams
USA, Arizona, Page, Upper Antelope Canyon, Sunbeams
USA, Arizona, Lower Antelope Canyon, Sandstone walls
USA, Arizona, View of Grand Canyon
Grand Canyon, View from South Rim, Arizona, USA
Canyon de Chelly desert landscape
Meteorite crater
Canyon Diablo meteorite fragment
Barringer Crater rock specimen
Tufa formations at Mono Lake, USA
Dusk, Monument Valley, Utah, USA
Balanced Rock, Arches National Park, Utah, USA
Rock formations, Canyonlands National Park, Utah, USA
Night sky over Canyonlands National Park, USA
Double Arch rock formation, Arches National Park, Utah, USA
Rock spire, Arches National Park, Utah, USA
Slot canyon designs
Sedimentary rock
Coconino Sandstone, Grand Canyon, Arizona
The American scene
Horseshoe bend - Aerial view
Lake Powell - aerial view
View from aeroplane over Arizona, USA
Arizona, USA, aerial photograph
Iron meteorite
Copper mine stalactites
Colourful coastal rock and clear blue sea
Hoodoo rock formation