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Irregular blocky lava (a'a) and cinder cones of the volcanic landscape of Timanfaya National Park, Lanzarote, Canary Islands, Spain, Atlantic Ocean, Europe
Close-up of dinosaur footprint, Dinosaur Trackway, Clayton Lake State Park, Clayton, New Mexico, United States of America, North America
Rocky amphitheatre with pool, at head of Cathedral Gorge, Purnululu National Park, UNESCO World Heritage site, Bungle Bungle, Kimberley, Western Australia, Australia, Pacific
Fossil logs 200 million years old scattered over desert floor in National Park, Petrified Forest National Park, Arizona, United States of America (U.S.A.), North America
Hikers at Red Crater on the Tongariro Crossing, Tongariro National Park, the oldest national park in the country, UNESCO World Heritage Site, Taupo Volcanic Zone, North Island, New Zealand, Pacific
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Sand dunes in the Great Sand Dunes National Park and Preserve with Sangre Cristo Mountains in the background, Colorado, United States of America, North America
Glacier near Plaza de Mulas basecamp, Aconcagua Provincial Park, Andes mountains, Argentina, South America
Glacier near Plaza de Mulas basecamp, Aconcagua Provincial Park, Andes mountains, Argentina, South America
Balanced Rock, a pinnacle of red sandstone caused by erosion, in the Arches National Park in Utah, United States of America, North America
Rock formations caused by erosion and known as North Window Arch, Arches National Park, Utah, United States of America, North America
Beauchamp Falls, Blue Mountains National Park, UNESCO World Heritage Site, near Blackheath, New South Wales (N.S.W.), Australia, Pacific
Turret Arch through North Window at sunrise, Arches National Park, Moab, Utah, United States of America, North America
Thor's Hammer near Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America
Salt pan polygons at Badwater Basin, 282ft below sea level and the lowest place in North America, Death Valley National Park, California, United States of America, North America
Tourists cross flood scoured rocks, past typical formations, Purnululu National Park, UNESCO World Heritage Site, Bungle Bungle, Kimberley, Western Australia, Australia, Pacific
Echinus Geyser, erupts every hour in Norris Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
View from the Rim, Grand Canyon of the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Hot water in pools on calcite terraces deposited by Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Rio Grande River, Santa Elena Canyon, Big Bend National Park, Texas, United States of America, North America
Monument Valley Navajo Tribal Park, Utah Arizona border area, United States of America, North America
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Dinosaur Trackway, Clayton Lake State Park, Clayton, New Mexico, United States of America, North America
Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Travertine calcite deposits, Minerva Terrace, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Rim of Gunung Bromo, Bromo-Tengger-Semeru National Park, island of Java, Indonesia, Southeast Asia, Asia
Hoodoos, Bryce amphitheater, Bryce Canyon National Park, Utah, United States of America (U.S.A.), North America
Norber erratics near Austwick, erratic boulders left on limestone pavement by erosion, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe
Double Arch in the Windows section of Arches National Park, Utah, United States of America, North America
Sandstone layers under clouds, Valley of Fire State Park, Nevada, United States of America, North America
Kilauea thermal area, Hawaii Volcanoes National Park, UNESCO World Heritage Site, Island of Hawaii (Big Island), Hawaii, United States of America, North America
Blisters measuring about 10 cm across in boiling mud pool, Mud volcano, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Tourists on viewing platform, Punakaiki, Pancake Rocks and blowholes, Paparoa National Park, Westland, South Island, New Zealand, Pacific
Morning Glory spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Norber erratics near Austwick, erratic boulders left on limestone pavement by erosion, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe
Norber erratics near Austwick, erratic boulders left on limestone pavement by erosion, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe
Artist's Palette, Artist's Drive, Death Valley National Park, California, United States of America, North America
The Olgas, Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Turret Arch through North Window at dawn, Arches National Park, Utah, United States of America, North America
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Close-up of the limestone terraces formed by volcanic water depositing six inches of calcium carbonate a year, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Aerial view of peak of Mount Cook, Mount Cook National Park, Southern Alps, Canterbury, South Island, New Zealand, Pacific
Echidna Chasm Walk, Purnululu National Park, UNESCO World Heritage Site, Bungle Bungle mountain range, Western Australia, Australia, Pacific
Gokyo Lakes, Gokyo, Sagarmatha National Park, UNESCO World Heritage Site), Solukhumbu District, Sagarmatha, Eastern Region, Nepal, Asia
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Dinosaur Trackway, Clayton Lake State Park, Clayton, New Mexico, United States of America, North America
Moraine Lake with mountains that overlook Valley of the Ten Peaks, Banff National Park, Canada, North America
Skaftafellsjokull, impressive glacial tongue of the Vatnajokull ice cap in Skaftafell National Park, south-east Iceland (Austurland), Iceland, Polar Regions
Salt pan polygons at Badwater Basin, 282ft below sea level and the lowest place in North America, Death Valley National Park, California, United States of America, North America
West Temple, 7810 feet on left, and Sundial Tower, 7590 feet center rear, Zion National Park, Utah, United States of America, North America
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Svartifoss waterfall with basalt columns in Skaftafell National Park, South area, Iceland, Polar Regions
Travertine calcite deposits on the Canary Spring terraces, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Rock formation caused by erosion and known as Delicate Arch in the Arches National Park in Utah, United States of America, North America
Outcrop of Manhattan gneiss which forms bedrock for skyscrapers, Central Park, New York City, New York, United States of America (U.S.A.), North America
Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
Late afternoon, Yovimpa Point, Bryce Canyon National Park, Utah, United States of America, North America
Rock patterns, Stanage Edge, Peak District National Park, Derbyshire, England, United Kingdom, Europe
Geyser, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Pine tree and bushes growing on slickrock, Zion National Park, Utah, United States of America, North America
Multi coloured sandstone rock formations in the Valley of Fire State Park, Nevada, United States of America, North America
View from Sunrise Point at sunrise, Bryce Canyon National Park, Utah, United States of America, North America
Coloured bands and ridges on the Blue Mesa in the Petrified Forest National Park in Arizona, United States of America, North America
Blue Mesa, Petrified Forest National Park, Arizona, United States of America (U.S.A.), North America
Path between crater cones inside Haleakala volcano crater, Haleakala National Park, island of Maui, Hawaii, United States of America, Pacific
Norber erratics near Austwick, erratic boulders left on limestone pavement by erosion, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe
Water tumbling upon black basalt columns at famous Svartifoss waterfall in Skaftafell National Park, south-east Iceland (Austurland), Iceland, Polar Regions
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Red sandstone rocks, with Muddy Mountains in the background, in the Valley of Fire State Park, Nevada, United States of America, North America