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Wind eroded pinnacle rock showing strata, Tamegaout, Algeria, North Africa, Africa
Desert landscape with rock formations in Monument Valley, Arizona, United States of America, North America
Desert landscape with rock formations in Monument Valley, Arizona, United States of America, North America
View from limestone pavement across the Jamison Valley in the Blue Mountains National Park where the blue haze is caused by eucalyptus oil, near Katoomba, UNESCO World Heritage Site, New South Wales (N.S.W.), Australia, Pacific
Looking out through entrance of cave, Deer Cave, Gunung Mulu National Park, UNESCO World Heritage Site, Sarawak, island of Borneo, Malaysia, Southeast Asia, Asia
Cathedral Cove, Coromandel Peninsula, South Auckland, North Island, New Zealand, Pacific
Remarkable Rocks, Flinders Chase National Park, Kangaroo Island, South Australia, Australia, Pacific
Part of Nourlangie Rock, sacred aboriginal shelter and rock art site, Kakadu National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Rock arches, Beirut, Lebanon, Mediterranean Sea, Middle East
Frank Slide, where giant rockfall occurred in 1903, limestone debris fell 400m, Alberta, Canada, North America
Rock formations, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Rock formations, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Stratified rock at Agio Pavlos in southern Crete, island of Crete, Greece, Mediterranean, Europe
Stratified rock at Agio Pavlos in southern Crete, island of Crete, Greece, Mediterranean, Europe
Rock outcrops at Hartland Quay, North Cornwall, England, United Kingdom, Europe
Part of the North Unit of Badlands National Park, carved out of the prairies by rapid water erosion of sediments, South Dakota, United States of America, North America
Arbol de Piedra, wind eroded rock near Laguna Colorada, Southwest Highlands, Bolivia, South America
Sof Omar cave, exit into the downstream gorge, Southern Highlands, Ethiopia, Africa
Sof Omar cave, main gallery of River Web, Southern Highlands, Ethiopia, Africa
Tufa towers at Lac Abhe (Abbe), formed by hot springs beneath old lake at higher level, Afar Triangle, Djibouti, Africa
Tufa towers at Lac Abhe (Abbe), formed by hot springs beneath old lake at higher level, Afar Triangle, Djibouti, Africa
Lavas from Ardoukoba volcano in Rift Valley 152m below sea level, Afar Triangle, Djibouti, Africa
Rock formation called 'the finger of Allah', Akakus, Sahara desert, Fezzan, Libya, North Africa, Africa
Strong folding in garnet gneiss, Hammerfest, Norway, Scandinavia, Europe
Wave-cut platform, and chalk cliffs, Flamborough South Landing, Yorkshire, England, United Kingdom, Europe
Holy monastery of Aghia Triada (Holy Trinity), Meteora, UNESCO World Heritage Site, Greece, Europe
Briksdal glacier, Sogn and Fjordane, Norway, Scandinavia, Europe
Svartifoss waterfall, Skaftafell National Park, Iceland, Polar Regions
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
Roque Nublo (mountain peak), near Ayacata, Gran Canaria, Canary Islands, Spain, Atlantic, Europe
Red rock formations and jangada boat on the seafront of Canoa Quebrada, Canoa Quedrada, Ceara', Brazil, South America
Coastal rock formations, Yehliu, Taipei County, Taiwan, Asia
Coastal rock formations, Yehliu, Taipei County, Taiwan, Asia
Entrance to Fingal's Cave, columnar basalt rock, Island of Staffa, Argyllshire, Inner Hebrides, Scotland, United Kingdom, Europe
The Cairngorms near Aviemore, Highland region, Scotland, United Kingdom, Europe
Rough Tor Rocks, Bodmin Moor, near Camelford, Cornwall, England, United Kingdom, Europe
Folded limestone and shale, Jurassic period, Stair Hole, Lulworth, Dorset, England, United Kingdom, Europe
Ogygiopsis klotzi, fossil, trilobite 50mm long with small fault through it, Cambrian, Burgess Shale, Yoho, Canada, North America
Sedimentary rocks, clay, colour banded by iron oxides, horizontal Triassic Chinle Clay, Blue Mesa, Painted Desert, Arizona, United States of America, North America
Limestone Stone Forest, near Kunming, Yunnan province, China, Asia
The Giants Causeway, UNESCO World Heritage Site, Co. Antrim, Ulster, Northern Ireland, United Kingdom, Europe
The Giants Causeway, UNESCO World Heritage Site, Co. Antrim, Ulster, Northern Ireland, United Kingdom, Europe
Third crater from the summit of Irazu, highest in Costa Rica at 3432m, last erupted 1994, Parque Nacional Volcan Irazu, Cartago, Costa Rica, Central America
Pigeon rocks (Rawcheh rocks), Beirut, Lebanon, Middle East
Antelope Canyon, a slot canyon, Upper Canyon, Page, Utah, United States of America, North America
Remarkable Rocks, Kangaroo Island, South Australia, Australia, Pacific
Remarkable Rocks, Kangaroo Island, South Australia, Australia, Pacific
View of Koh Ping-gan from Koh Ta Poo, known as James Bond island, Phang-Nga Bay, Thailand, Southeast Asia, Asia
Perce Rock, Gaspe peninsula, province of Quebec, Canada, North America
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, with the Olgas in the distance, Northern Territory, Australia, Pacific
A man gazing up at Wave Rock, at Hyden, Western Australia, Australia, Pacific
Ayers Rock, Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Rock strata in cliffs in Paria River Valley, Grand Staircase-Escalante National Monument, near Page, Arizona, United States of America, North America
Detail, The Coloured Canyon, near Nuweiba, Sinai, Egypt, North Africa, Africa
Remarkable Rocks, Flinders Chase National Park, Kangaroo Island, South Australia, Australia, Pacific
Remarkable Rocks, Flinders Chase National Park, Kangaroo Island, South Australia, Australia, Pacific
Rockfalls from red and white chalk cliff, Hunstanton, Norfolk, England, United Kingdom, Europe
Columnar structures, created during cooling of basalt lava, with an intrusion or dyke of darker rock in the foreground, near Bombo Beach, Kiama, south coast, New South Wales, Australia, Pacific
Little tourist boat ships beside a large monolith in the Avacha Bay near Petropavlovsk-Kamchatsky, Kamchatka, Russia, Eurasia
Thrombolites, a variey of microbialite or living rock that produce oxygen and deposit calcium carbonate, similar to some of the earliest fossil forms of life found on Earth, Lake Clifton, Yalgorup National Park, Mandurah, Western Australia, Australia, Pacific
Thrombolites, a variey of microbialite or living rock that produce oxygen and deposit calcium carbonate, similar to some of the earliest fossil forms of life found on Earth, Lake Clifton, Yalgorup National Park, Mandurah, Western Australia, Australia, Pacific
Thrombolites, a variey of microbialite or living rock that produce oxygen and deposit calcium carbonate, similar to some of the earliest fossil forms of life found on Earth, Lake Clifton, Yalgorup National Park, Mandurah, Western Australia, Australia, Pacific
Rock pillars formed by erosion of thick hard layer of calcrete over soft limestone, The Pinnacles Desert, Nambung National Park, near Cervantes, Dandaragan Shire, Western Australia, 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
Rock pillars formed by erosion of thick hard layer of calcrete over soft limestone, The Pinnacles Desert, Nambung National Park, near Cervantes, Dandaragan Shire, Western Australia, Australia, Pacific
Patterns created by sea erosion on rocks at Rumbling Kern, near Howick, Alnwick, Northumberland, England, 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
Eroded calcarenite rock (cemented coral sands) with Mount Lidgbird and Mount Gower by the lagoon with the world's most southerly coral reef, on this 10km long volcanic island in the Tasman Sea, Lord Howe Island, UNESCO World Heritage Site, New South Wales, Australia, Pacific Ocean.
Devil's Marbles, the result of spheroidal weathering of strong granite beneath an ancient soil, Tennant Creek, Northern Territory, Australia, Pacific
Columnar basalt, Vikingbukta (Viking Bay), Scoresbysund, Northeast Greenland, Polar Regions
Folded layers of Jurassic sedimentary limestone and marl rocks in the cliffs at Vega beach, Ribadesella, Asturias, Spain, Europe
Castro de Gaviotas (Gull's fort) karst limestone rock archway, and La Canalina bay, near Llanes, Asturias, Spain, Europe
Hound Tor, Dartmoor National Park, Devon, England, United Kingdom, Europe
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Hot air ballooning over rock formations, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Hiker on walkway admires the creek in the narrow limestone gorge, Aare Gorge, Bernese Oberland, Canton of Berne, Switzerland, Europe
The Olgas (Kata Tjuta) at sunrise, 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
The Saddle of Cathedral Rock, Sedona, Arizona, United States of America, North America
The Saddle of Cathedral Rock, Sedona, Arizona, United States of America, North America
Devils Bridge, Sedona, Arizona, United States of America, North America
Te Horo rock, Cathedral Cove, Coromandel Peninsula, North Island, New Zealand, Pacific
Coastal sea cliffs and stacks, near Cape Wrath and Sandwood Bay, Highland region, Scotland, United Kingdom, Europe
Uluru (Ayers Rock), Uluru-Kata Tjuta National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific
Volcanic rock formations on south eastern coast, Kleftiko, Milos, Cyclades islands, Greece, Mediterranean, Europe
Farmhouse beneath limestone scarp, Glwyseg mountain, Llangollen, Clwyd, Wales, United Kingdom, Europe
Fairy chimney rock formations, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Sof Omar cave, downstream maze, daylight in through multiple entrances, Southern Highlands, Ethiopia, Africa
Recent pahoehoe basalt lavas, Erte Ale volcano, Danakil Depression, Ethiopia, Africa
Close-up of coloured sandstone from which the Nabateans carved their city, Petra, Jordan, Middle East
Lava flow, Kilauea, Hawaii Volcanoes National Park, UNESCO World Heritage Site, Island of Hawaii (Big Island), Hawaii, United States of America, North 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
Christie's Hole, eroded volcanic rock coast of Papa Stour (Great Island of the Priests), Shetland Islands, Scotland, United Kingdom, Europe
Bhimbetka Caves with Neolithic paintings in rock shelters in sandstone, Obaidullaganj hills, Bhopal, Madhya Pradesh, India, Asia
Diana Point, Al Jabal Al Akkar region, Hajar Mountains, Sultanate of Oman, Middle East
Valley of Goreme, central Cappadocia, Anatolia, Turkey, Asia Minor, Asia