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Cheddar Gorge tourist attraction, limestone rock formations, Somerset, England, United Kingdom, Europe
Colourful patterns created by sea erosion on rocks revealed at low tide on Spittal Beach, Berwick-upon-Tweed, Northumberland on border between England and Scotland, United Kingdom, Europe
Natural rock archway carved by the sea through limestone rock at Cuevas del Mar (sea caves) beach, near Llanes, Asturias, Spain, Europe
Castro de Gaviotas (Gull's fort) karst limestone rock archway, and La Canalina bay, near Llanes, Asturias, Spain, Europe
Fingal's Cave, Isle of Staffa, Inner Hebrides, Scotland, United Kingdom, Europe
Sof Omar cave, downstream maze, daylight in through multiple entrances, Southern Highlands, Ethiopia, Africa
Valley of Goreme, central Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Valley of Goreme, central Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Valley of Goreme, central Cappadocia, Anatolia, Turkey, Asia Minor, Asia
People canoeing near Tham Law (tube cove), Ao Phang-Nga Marine Park, Phang Nga province, Thailand, Southeast Asia, Asia
Volcanic stratified rocks, Parque Nacional del Teide, Tenerife, Canary Islands, Spain, Europe
Different coloured rocks in the Red Valley, Orthaisar, Cappadocia, Anatolia, Turkey, Eurasia
Remarkable Rocks, Kangaroo Island, South Australia, Australia, Pacific
Lava flow, Kilauea, Hawaii Volcanoes National Park, UNESCO World Heritage Site, Island of Hawaii (Big Island), Hawaii, United States of America, North America
Rock arches and cliffs at Ponte da Piedade near Lagos, Algarve, Portugal, Europe
Folded layers of Jurassic sedimentary limestone and marl rocks in the cliffs at Vega beach, Ribadesella, Asturias, Spain, Europe
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Giants Causeway, UNESCO World Heritage Site, County Antrim, Ulster, Northern Ireland, United Kingdom, Europe
Tufa towers at Lac Abhe (Abbe), formed by hot springs beneath old lake at higher level, Afar Triangle, Djibouti, Africa
Coastal rock formations, Yehliu, Taipei County, Taiwan, Asia
Old Man of Hoy, sandstone sea stack 137m high, with ferry in background, Hoy, Orkney Islands, Scotland, United Kingdom, Europe
Colourful volcanic landscape, Tupiza, Southern Altiplano, Bolivia, South America
Cooled lava from recent eruption, Kilauea Volcano, Hawaii Volcanoes National Park, UNESCO World Heritage Site, Island of Hawaii (Big Island), Hawaii, United States of America, North America
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Snow-capped mountains and steep cliffs of Icy Arm, Baffin Island, Nunavut, Canada, North America
Lava beds surround Snaefellsjokull, an active strato volcano capped in snow and ice, on the Snaefellsnes Peninsula, North West area, Iceland, Polar Regions
Moss covered lava beds surround Snaefellsjokull, an active strato volcano capped in snow and ice, on the Snaefellsnes Peninsula, North West area, Iceland, Polar Regions
Lavas from Ardoukoba volcano in Rift Valley 152m below sea level, Afar Triangle, Djibouti, Africa
Coastline near Canoa Quebrada, Canoa Quedrada, Ceara', Brazil, South America
Natural rock arch, desert scenery, Wadi Rum, Jordan, Middle East
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Views from the Nadab lookout, at the sacred Aboriginal site of Ubirr, Kakadu National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Thassos (Thasos), Aegean Islands, Greek Islands, Greece, Europe
Valley of Goreme, central Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Rock formations and coastline near Canoa Quebrada, Canoa Quedrada, Ceara', Brazil, South America
Lake of the Clouds, Carlsbad Caverns National Park, UNESCO World Heritage Site, New Mexico, United States of America, North America
Remarkable Rocks, Flinders Chase National Park, Kangaroo Island, South Australia, Australia, Pacific
Rock formations, Kaleto fortress, Belogradchik, Bulgaria, Europe
View of sedimentary layers from Cape Hay, Bylot Island, Nunavut, Canada, North America
Fingal's Cave, Isle of Staffa, Inner Hebrides, Scotland, United Kingdom, Europe
Queen's Head, coastal rock formations, Yehliu, Taipei County, Taiwan, Asia
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Fingal's Cave, Isle of Staffa, Inner Hebrides, Scotland, United Kingdom, Europe
Rock formations caused by erosion in a desert landscape in Monument Valley, Arizona, United States of America, North America
Volcanic rocks and beach at Paleokori, southern coast, Milos, Cyclades islands, Greece, Mediterranean, Europe
Yellow and orange volcanic rock, Nisyros (Nisiros) (Nissyros), Dodecanese islands, Greece, Mediterranean, Europe
Elephant rock, Castelsardo, Sassari province, island of Sardinia, Italy, Mediterranean, Europe
Roque Nublo (mountain peak), near Ayacata, Gran Canaria, Canary Islands, Spain, Atlantic, Europe
Rock formations and coastline near Canoa Quebrada, Canoa Quedrada, Ceara', Brazil, South America
Antelope Canyon, Page, Arizona, United States of America, North America
Yesnaby Castle sea stack, rock eroded by the sea, Mainland, Orkney Islands, Scotland, United Kingdom, Europe
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Stromatolites, one of the most ancient life forms on earth, mats of micro-organisms that become rock-like structures through accretion of calcium carbonate, in highly saline lagoons like here in Lake Thetis, Cervantes, Dandaragan Shire, Western Australia, Australia, Pacific
Colourful patterns created by sea erosion on rocks revealed at low tide on Spittal Beach, Berwick-upon-Tweed, Northumberland on border between England and Scotland, United Kingdom, Europe
Irregular blocky lava (a'a) and cinder cones of the volcanic landscape of Timanfaya National Park, Lanzarote, Canary Islands, Spain, Atlantic Ocean, Europe
Erosion helps form stunning formations in the rocks of the Coloured Canyon, Sinai South, Egypt, North Africa, Africa
Red Rock Canyon outside Las Vegas, Nevada, 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
Bagia, island of Sardinia, Italy, Mediterranean, Europe
Landscape with fairy chimneys, Pasabag, near Zelve, Cappadocia, Anatolia, Turkey, Eurasia
The Cares Gorge, 1000m deep, 12km long, limestone, Picos de Europa, Cantabria, Spain, Europe
Gorges of Verdon, Alpes-de-Haute-Provence, Provence, France, Europe
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Folded limestone, Stair Hole, Lulworth Cove, Dorset, England, United Kingdom, Europe
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
Recent pahoehoe basalt lavas, Erte Ale volcano, Danakil Depression, Ethiopia, Africa
Erosion with volcanic tuff pillars, Pasabagi, near Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Limestone Stone Forest, near Kunming, Yunnan province, China, Asia
Hot air ballooning over rock formations, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Rock formations in the interior of the Cango Caves, near Oudtshoorn, South Africa, Africa
Close-up of polychromic sandstone rock patterns, Petra, Jordan, Middle East
Tourists cross flood scoured rocks, past typical formations, Purnululu National Park, UNESCO World Heritage Site, Bungle Bungle, Kimberley, Western Australia, Australia, Pacific
Slot canyon in red sandstone, Antelope Canyon, near Page, Arizona, United States of America (U.S.A.), North America
Houses in rock formations, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Akakus, Sahara desert, Fezzan, Libya, North Africa, Africa
Kilauea volcano crater showing solidified ropy lava called pahoehoe, The Big Island, Hawaii, Hawaiian Islands, United States of America, North America
Unusual weathered rock formation, the Olgas, Northern Territory, Australia, Pacific
Desert, Wadi Rum, Jordan, Middle East
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
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Hiker on walkways admires the creek in the narrow limestone gorge, Aare Gorge, Bernese Oberland, Canton of Uri, Switzerland, Europe
Close-up of rock, ochre earth and prickly pear cactus, Santorini (Thira), Cyclades Islands, Greek Islands, Greece, Europe
Rock formations of the Three Sisters from Echo Point, Blue Mountains, UNESCO World Heritage Site, New South Wales (NSW), Australia, Pacific
Houses in rock formations, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Volcanic rock formations on south eastern coast, near Kleftiko, Milos, Cyclades islands, Greece, Mediterranean, Europe
Ille-sur-Tete, Les Orgues, Pyrenees-Orientales, Languedoc-Roussillon, France, Europe
Hoodoos, Bryce amphitheater, Bryce Canyon National Park, Utah, United States of America (U.S.A.), North America
Les Mees, The Penitents, Provence, France, Europe
Pine tree on a slickrock face, Zion National Park, Utah, United States of America, North America
Yesnaby Castle sea stack, rock eroded by the sea, Mainland, Orkney Islands, Scotland, United Kingdom, Europe
Rock archways at Praia do Camilo (Camel beach), Lagos, Algarve, Portugal, Europe
Rock pinnacles in the Stone Forest in Yunnan Province, China, Asia
Tourists on viewing platform, Punakaiki, Pancake Rocks and blowholes, Paparoa National Park, Westland, South Island, New Zealand, Pacific
Colourful volcanic rock, Mount Tarawera, Rotorua, South Auckland, North Island, New Zealand, Pacific
Capo Boi, southeast coast, island of Sardinia, Italy, Mediterranean, Europe
Green pool, lava mountains, El Golfo, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Tory Island, County Donegal, Ulster, Eire (Republic of Ireland), Europe
Cederberg, Western Cape province, South Africa, Africa
Rock, Sigiriya, UNESCO World Heritage Site, Sri Lanka, Asia