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Virgin River flowing through the Zion National Park, Utah, United States of America, North America
The Colorado River with Castle Valley in the background, near Moab, Utah, United States of America, North America
Salt crust, Salar de Atacama, Atacama Desert, Chile, South America
Valle de la Luna (Valley of the Moon), Atacama Desert, Chile, South America
El Tatio Geysers, Atacama Desert, Chile, South America
Valle de la Luna (Valley of the Moon), Atacama Desert, Chile, South America
The colourful sandstone formations of the Bryce Canyon National Park in the late afternoon, Utah, United States of America, North America
Pictographs, Honanki Heritage Site, Coconino National Forest, Arizona, United States of America, North America
View over the sandstone cliffs of the Grand Staircase Escalante National Monument, Utah, United States of America, North America
View over the cliffs of the Zion National Park and the Angel's Landing path, Zion National Park, Utah, United States of America, North America
Sandstone rocks reflecting in the Colorado River, Canyonlands National Park, Utah, United States of America, North America
Sandstone chimneys in the Kodachrome Basin State Park, Utah, United States of America, North America
The Cliff Palace Indian dwelling, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America
The colourful sandstone formations of the Bryce Canyon National Park in the late afternoon, Utah, United States of America, North America
Huge glacier in Hornsund, Svalbard, Arctic, Norway, Scandinavia, Europe
Redrock sandstone formations in the Kodachrome Basin State Park, Utah, United States of America, North America
Red sandstone cliffs in the Capitol Reef National Park, Utah, United States of America, North America
Cold lava walls in the Craters of the Moon National Park, Idaho, United States of America, North America
Salar de Atacama, Atacama Desert, Chile, South America
The colourful sandstone formations of the Bryce Canyon National Park in the late afternoon, Utah, United States of America, North America
Jackson Lake in the Teton range in the Grand Teton National Park, Wyoming, United States of America, North America
Road leading in the Teton range in the Grand Teton National Park, Wyoming, United States of America, North America
Balanced Rock, Arches National Park, Utah, United States of America, North America
Early morning sunlight shining on the towering cliffs of the Zion National Park, Utah, United States of America, North America
Late sunlight glowing on the rocks of the Zion National Park, Utah, United States of America, North America
Trekkers walking along the Slickrock trail near, Moab, Utah, United States of America, North America
Vietnam, tourist and fishing boats in halong bay
The colourful Grand Canyon of the Yellowstone, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Valle de la Luna (Valley of the Moon), Atacama Desert, Chile, South America
Mosaic Canyon, Death Valley National Park, California, United States of America, North America
The colourful sandstone formations of the Bryce Canyon National Park in the late afternoon, Utah, United States of America, North America
Road leading through the Grand Staircase Escalante National Monument, Utah, United States of America, North America
View over the Lewis River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Redrock sandstone formations in the Kodachrome Basin State Park, Utah, United States of America, North America
Road leading through the Capitol Reef National Park, Utah, United States of America, North America
Laguna Sejar, Salar de Atacama, Atacama Desert, Chile, South America
Laguna Tuyajto, Atacama Desert, Chile, South America
Valle de la Luna (Valley of the Moon), Atacama Desert, Chile, South America
View over the Zion National Park from Angel's Landing, Zion National Park, Utah, United States of America, North America
The towering cliffs of the Zion National Park, Utah, United States of America, North America
The colourful sandstone formations of the Bryce Canyon National Park in the late afternoon, Utah, United States of America, North America
The cliffs of the Narrows in the Zion National Park, Utah, United States of America, North America
Walkway through cold lava in the Craters of the Moon National Park, Idaho, United States of America, North America
The colourful sandstone formations of the Bryce Canyon National Park in the late afternoon, Utah, United States of America, North America
Travertine terraces in Mammoth hot springs terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Capitol Reef National Park, Utah, United States of America, North America
Dead Horse State Park, Utah, United States of America, North America
South Window Arch seen through Turret Arch, Arches National Park, Utah, United States of America, North America
Mosaic Canyon, Death Valley National Park, California, United States of America, North America
Walkway through cold lava in the Craters of the Moon National Park, Idaho, United States of America, North America
Kayaking and rafting down the Colorado River, Castle Valley, near Moab, Utah, United States of America, North America
Walkway through cold lava in the Craters of the Moon National Park, Idaho, United States of America, North America
El Tatio Geysers, Atacama Desert, Chile, South America
Beautiful red sandstone formations in the Arches National Park, Utah, United States of America, North America
Dead tree in the Capitol Reef National Park, Utah, United States of America, North America
Woman standing on a giant arch near Moab, Utah, United States of America, North America
Stone wall of the Window section, Arches National Park, Utah, United States of America, North America
View over the sandstone cliffs of the Grand Staircase Escalante National Monument, Utah, United States of America, North America
The towering cliffs of the Zion National Park, Utah, United States of America, North America
The colourful Grand Canyon of the Yellowstone, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Hummer driving on the Slickrock trail, Moab, Utah, United States of America, North America
Cave diver lights airspace with flare, inspecting geological formations, Pont Den Gil cave, Menorca, Balearic Islands, Spain, Europe
The Chocolate Hills, a famous geological curiosity, with over 1000 of them, on the island of Bohol, the Philippines, Southeast Asia, Asia
The Chocolate Hills of Bohol, famous geological curiosity, of which there are over 1000, Bohol, Philippines, Southeast Asia, Asia
The Chocolate Hills of Bohol, famous geological curiosity, of which there are over 1000, Bohol, Philippines, Southeast Asia, Asia
Slopes of the Quiraing, a geological wonder, its distinctive features resulting from landslips of basalt lavas upon softer sedimentary rocks beneath, northeast coast of Trotternish Peninsula, Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Slopes of the Quiraing, a geological wonder, its distinctive features resulting from landslips of basalt lavas upon softer sedimentary rocks beneath, northeast coast of Trotternish Peninsula, Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Hiker on walkway admires the creek in the narrow limestone gorge, Aare Gorge, Bernese Oberland, Canton of Berne, Switzerland, Europe
Hiker on walkways admires the creek in the narrow limestone gorge, Aare Gorge, Bernese Oberland, Canton of Uri, Switzerland, Europe
View of Botha's Hall in the Cango Caves near Oudtshoorn in South Africa's Western Cape Province. To the left of centre is the Double Petrified column, in the centre is the Leaning Tower of Pisa and behind that is the Petrified Weeping Willow. On the right are the Frozen Victoria Falls.
The geological coastal formation known as 'Hole in the Wall' on the wild coast in a region of South Africa's Eastern Cape Province formerly known as the Transkei.
Interior and entrance of the Dahl Misfir (White Cave) in Qatar.
Night-time, moonlit view of the geological formation known as 'Hole in the Wall along the wild coast in a region of South Africa's Eastern Cape Province formerly known as the Transkei. Stars can be seen in the sky.
Mobius arch, natural arch formed out of granite rock at sunrise, lone pine peak, 12994, feet, alabama hills, sierra nevada, lone pine, california, usa
Coyote buttes north, the wave, sandstone formed by wind and water, paria wilderness area, arizona, usa
Sandstone formation, usa. Arizona, vermillion cliffs wilderness, paria canyon. North coyote buttes made from sandstone
Monument valley, view near artist point, utah, usa
Geology, usa. Arizona, paria canyon vermillion cliffs wilderness. North coyote buttes: the swirl. Made from navaho sandstone, formed by wind and weather
Dawn view of Mount Bromo (near left) and Gunung Semeru (centre background) in Bromo Tengger Semeru National Park, Indonesia.
Tiwu Ata Mbupu (Lake of Old People) one of three crater lakes on the summit of Mount Kelimutu on Flores island, Indonesia.
Sunrise over Tiwu Ko'o Fai Nuwa Muri, one of three crater lakes on the summit of Mount Kelimutu on Flores island, Indonesia.
Gunung Semeru, an active stratovolcano in Bromo Tengger Semeru National Park, Java, Indonesia.
Tiwu Ata Polo (Bewitched or Enchanted Lake) one of three crater lakes on the summit of Mt Kelimutu, Flores island, Indonesia.
The geological coastal formation known as 'Hole in the Wall' on the wild coast in a region of South Africa's Eastern Cape Province formerly known as the Transkei.
Monument valley, west mitten butte with old tree, utah, usa
Monument valley, mitten buttes and merricks butte with old tree, utah, usa
Coyote buttes north, juniper tree, juniperus, wacholder baum, sandstone formed by wind and water, paria wilderness area, arizona, usa
Monument valley, utah, usa
Mobius arch, natural arch formed out of granit rock at sunrise, lone pine peak, 12994, feet, mt. whitney, 14497, feet, highest peak of lower 48, alabama hills, sierra nevada, lone pine, california, usa
Bryce canyon in winter, view from sunset point, hoodoos at surise, bryce canyon national park, paunsaugunt plateau, utah, usa
A gravel road leading through the Groot Swartberge mountain range between Calitzdorp and Laingsburg in South Africa's western Cape province.
View of the walls and ceiling of Van Zyl's Hall in the Cango Caves near Oudtshoorn in South Africa's Western Cape Province.
Antelope canyon, sandstone slot canyon formed by wind and water, lower antelope canyon, page, arizona, usa
Monument valley, utah, usa
Antelope canyon, sandstone slot canyon formed by wind and water, lower antelope canyon, page, arizona, usa
Bryce canyon in winter, view from sunset point, hoodoos at surise, bryce canyon national park, paunsaugunt plateau, utah, usa
Geology, usa. Arizona, paria canyon vermillion cliffs wilderness. North coyote buttes: the swirl. Made from navaho sandstone, formed by wind and weather
Ephemeral arch, valley of fire state park, nevada, usa, nord amerika
Interior of the Baradla-Domica cave system in the Aggtelek National park which stradles the border between Hungary and Slovakia.
Ephemeral arch, valley of fire state park, nevada, usa, north america