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A rock climber ascends a cliff face formed by historic quarrying at Bole hill quarry on an autumn day in the Peak District, Derbyshire, England, United Kingdom, Europe

Icicles formed on the roof of caves at Olkhon Island as the waves enter the cave and freeze at the beginning of winter, Lake Baikal, Irkutsk Oblast, Siberia, Russia, Eurasia

Rough ice formed at Shaman Rock, Olkhon Island as the waves freeze at the beginning of winter, Lake Baikal, Irkutsk Oblast, Siberia, Russia, Eurasia

Rough ice formed at Olkhon Island as the waves freeze at the beginning of winter, Lake Baikal, Irkutsk Oblast, Siberia, Russia, Eurasia

Valle de los Hongos (Mushroom Rocks) formed of volcanic ash, Creel, Chihuahua, Mexico, North America

Ornate columns formed by many hanging stalactites and rising stalagmites coalescing, Drach caves (Cuevas del Drach), Mallorca, Balearic Islands, Spain, Mediterranean, Europe

Frost flowers formed on thin sea ice when the atmosphere is much colder than the underlying ice, Greenland, Denmark, Polar Regions

A Waterpocket Fold highlighting the erosion of tilted rock layers, formed 50 to 70 million years ago, Capitol Reef National Park, Utah, United States of America, North America

Coyote Buttes North, fragil sandstone formed by wind and water, Paria Wilderness Area, Arizona, United States of America, North America

Tourist framed in the frozen mouth of ice cave, with icicles formed on roof of caves at Olkhon Island as the waves freeze in winter, Lake Baikal, Irkutsk Oblast, Siberia, Russia, Eurasia

Rough ice formed at Olkhon Island as the waves freeze at the beginning of winter, Lake Baikal, Irkutsk Oblast, Siberia, Russia, Eurasia

Woman planting trees in a donga, a dry gully formed by running water, to help bind the soil, Lesotho, Africa

Tourist framed in the frozen mouth of ice cave, with icicles formed on roof of caves at Olkhon Island as the waves freeze in winter, Lake Baikal, Irkutsk Oblast, Siberia, Russia, Eurasia

Women planting trees in a donga, a dry gully formed by running water, to help bind the soil, Lesotho, Africa

Frost flowers formed on thin sea ice when the atmosphere is much colder than the underlying ice, Greenland, Denmark, Polar Regions

Beachgoers crossing a lagoon formed by the low tide, and detail of a watchtower in Cacela Velha, Algarve, Portugal, Europe

Valle de los Hongos (Mushroom Rocks) formed of volcanic ash, Creel, Chihuahua, Mexico, North America

Avacha volcano, lava plug formed in crater in 1991, Koryaksky volcano beyond, Kamchatka, East Siberia, Russia

Frost flowers formed on thin sea ice when the atmosphere is much colder than the underlying ice, Greenland, Denmark, Polar Regions

Lake in summit crater formed in 1991 eruption, Pinatubo volcano, northern Luzon, Philippines, Southeast Asia, Asia

Checkerboard Mesa, formed of Navajo sandstone, Zion National Park, Utah, United States of America, North America

Checkerboard Mesa, formed of Navajo sandstone, Zion National Park, Utah, United States of America, North America

Aerial view of the Davidson Glacier, a valley glacier formed in the Chilkat Range near Haines, Alaska, United States of America

Aerial view of the Meade Glacier, a valley glacier formed in the Chilkat Range near Haines, Alaska, United States of America

Ice formed under pressure appears blue, Monaco glacier, Leifdefjorden, Spitsbergen, Svalbard, Norway, Scandinavia, Europe

Snorkelers swim above a blue hole on Palau's barrier reef. This hole formed when sea level was much lower than it is today.

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Drone view of Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Aerial view of Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Waterfall dropping in to naturally formed swimming pools in Wadi Bani Khalid, Sultanate of Oman, Middle East

The hoodoos, rock formations formed by the erosion of Bentonite in the Badlands close to Drumheller in Alberta, Canada, North America

The hoodoos, rock formations formed by the erosion of Bentonite, in the Badlands close to Drumheller in Alberta, Canada, North America

The hoodoos, rock formations formed by the erosion of Bentonite, in the Badlands close to Drumheller in Alberta, Canada, North America

Aerial photography of an esker, a sandy ridge formed by subglacial deposits of sediment in the last Ice Age, in Manitoba, Canada, North America

Aerial view of lakes and an esker, a ridge formed by sediment deposited during the last Ice Age, in northern Manitoba, Canada, North America

Toxic pond formed from runoff of mine tailings at an abandoned copper mine in the Prescott National Forest near Perkinsville, Arizona, United States of America, North America

Drone view of Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Aerial drone view of particular ice textures formed in the Svinafellsjokull glacier following global warming, Iceland, Polar Regions

Rills formed in the sandy beach at low tide as found on Bigge Island, Kimberley, Western Australia, Australia, Pacific

Panorama of Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Kok-Moinok Canyon is a clay-sand structures formed on the slopes of arid mountains cut by water streams.

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

Aerial view of Kok-Moinok Canyon, a clay-sand structure formed on the slopes of arid mountains cut by water streams, Kyrgyzstan, Central Asia, Asia

One of the twin 100 meter waterfalls formed in the Warton Sandstone, King George River, Kimberley, Western Australia, Australia, Pacific

Aerial drone view of particular ice textures formed in the Hoffelsjokull glacier following global warming, Iceland, Polar Regions

Aerial drone view of particular ice textures formed in the Svinafellsjokull glacier following global warming, Iceland, Polar Regions

Aerial drone view of particular ice textures formed in the Svinafellsjokull glacier following global warming, Iceland, Polar Regions

Colourful pools of calcite deposits formed at Huanglong temple, Huanglong National Park, UNESCO World Heritage Site, Sichuan Province, China, Asia

Toxic pond formed from runoff of mine tailings at an abandoned copper mine in the Prescott National Forest near Perkinsville, Arizona, United States of America, North America

A massive series of waves formed after a huge calving event from the glacier in Neko Harbor, Antarctica, Polar Regions

The stunning rock formations of the Quebrada de las Flechas formed by slanting layers of strata, Argentina, South America

The naturally formed Redwall Cavern, Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Above and below view of an arch formed in an iceberg at Cuverville Island, Ererra Channel, Antarctica, Polar Regions

A large iceberg with holes and arches formed in it near Coronation Island, South Orkneys, Antarctica, Polar Regions

A large iceberg with holes and arches formed in it near Coronation Island, South Orkneys, Antarctica, Polar Regions

Natural pools formed by volcanic lava filled with crystal-clear sea water, Porto Moniz, Madeira island, Portugal, Atlantic, Europe

Above and below view of an arch formed in an iceberg at Cuverville Island, Ererra Channel, Antarctica, Polar Regions

A massive series of waves formed after a huge calving event from the glacier in Neko Harbor, Antarctica, Polar Regions

The sun shining through icicles formed on the shores of Lago Bianco at Bernina, completely frozen, Bernina Pass, Graubunden, Switzerland, Europe

Above and below view of an arch formed in an iceberg at Cuverville Island, Ererra Channel, Antarctica, Polar Regions

A dusk view of a rock arch formed from layers of sedimentary rocks, at Hartland Quay, on the Atlantic coast of Devon, England, United Kingdom, Europe

Peoples shadows on wind formed sandstone formations at Los Gatos, Baja California Sur, Mexico, North America

Above and below view of an arch formed in an iceberg at Cuverville Island, Ererra Channel, Antarctica, Polar Regions

A sunlit view of a rock arch, formed from multiple layers of red sedimentary rock, at Hartland Quay, on the Atlantic coast of Devon, England, United Kingdom, Europe

Moai in the Rano Raraku volcanic crater formed of consolidated ash (tuf), Easter Island, UNESCO World Heritage Site, Chile, South America

Moai in the Rano Raraku volcanic crater formed of consolidated ash (tuf), Easter Island, UNESCO World Heritage Site, Chile, South America

A naturally formed arch at night in the Alabama Hills National Scenic Area, Eastern Sierra Nevadas, California.

Moai in the Rano Raraku volcanic crater formed of consolidated ash (tuf), Easter Island, UNESCO World Heritage Site, Chile, South America

A naturally formed arch at night in the Alabama Hills National Scenic Area, Eastern Sierra Nevadas, California.

Victim of Vesuvius eruption, volcanic ash formed mould, form later revealed by injecting plaster, Pompeii, Campania, Italy, Europe

Tufa towers at Lac Abhe (Abbe), formed by hot springs beneath old lake at higher level, Afar Triangle, Djibouti, Africa

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

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

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Neatly-stacked dried cow dung, hand-formed into pats to be used for fuel for cooking, at a farm in Agra, Uttar Pradesh, India

Jameos del Agua lava tunnel formed in a museum of Cesar Manrique, Lanzarote, Canary Islands, Spain, Atlantic, Europe

Jameos del Agua lava tunnel formed in a museum of Cesar Manrique, Lanzarote, Canary Islands, Spain, Atlantic, Europe

Victim of Vesuvius eruption, volcanic ash formed mould retaining human form later revealed by injecting plaster, Pompeii, UNESCO World Heritage Site, Campania, Italy, Europe

Lewisian gneiss, one of the oldest rocks on earth formed 2 billion years ago, Isle of Lewis, Outer Hebrides, Scotland, United Kingdom, Europe

Tufa towers at Lac Abhe (Abbe), formed by hot springs beneath old lake at higher level, Afar Triangle, Djibouti, Africa

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

Loch Ba and the Black Mountains in autumn, an acidic low nutrient river formed in a catchment area of peat moorland, Rannoch Moor, Highland region, Scotland, United Kingdom, Europe

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

A yellow diamond embedded in a piece of kimberlite. Kimberlite is the igneous stone in which diamonds are found and was formed in the Earth's crust between 100 and 1000 million years ago.

Mobius arch, natural arch formed out of granite rock at sunrise, lone pine peak, 12994, feet, alabama hills, sierra nevada, lone pine, california, usa