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Crater of Poas Volcano in Poas Volcano National Park, in the Cordillera Central mountain range of Costa Rica, Central America
Crater of Poas Volcano in Poas Volcano National Park, in the Cordillera Central mountain range of Costa Rica, Central America
Sandstone sculpted walls, Upper Antelope Canyon, Arizona, United States of America, North America
Sandstone brain rock and red and white swirls at dawn, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Sandstone wave and cones under clouds, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Tree on sandstone silhouetted at sunset with purple clouds, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Orange clouds at sunset over sandstone cones, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Secret Falls in the fall, Washington County, Utah, United States of America, North America
Brain Rock at dusk, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Juniper and sandstone cones under the stars, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Stack Rocks, Castlemartin, Pembrokeshire, Wales, United Kingdom, Europe
Church Rock, Broad Haven Beach, Pembrokeshire, West Wales, Wales, United Kingdom, Europe
Multi coloured mountains, Humahuaca, province of Jujuy, Argentina, South America
Salinas Grandes, Jujuy, Argentina, South America
Salinas Grandes, Jujuy, Argentina, South America
Salinas Grandes, Jujuy, Argentina, South America
Salinas Grandes, Jujuy. Argentina, South America
Bedruthan Steps, Newquay, Cornwall, England, United Kingdom, Europe
Pink thrift flowers, Bedruthan Steps, Newquay, Cornwall, England, United Kingdom, Europe
Bedruthan Steps, Newquay, Cornwall, England, United Kingdom, Europe
Geologists taking mineral samples on Gran Cratere (The Great Crater), Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
Landscape, Isla Ometepe, Volcan Concepcion, Lago de Nicaragua, Nicaragua, Central America
Cresting the peak of Pacaya Volcano in Guatemala City, Guatemala, Central America
Cresting the peak of Pacaya Volcano in Guatemala City, Guatemala, Central America
Cresting the peak of Pacaya Volcano in Guatemala City, Guatemala, Central America
Cresting the peak of Pacaya Volcano in Guatemala City, Guatemala, Central America
On the summit of the active Pacaya Volcano, Guatemala, Central America
On the summit of the active Pacaya Volcano, Guatemala, Central America
Valle de los Hongos (Mushroom Rocks) formed of volcanic ash, Creel, Chihuahua, Mexico, North America
Sulphur river below Volcano Tavurvur, Rabaul, East New Britain, Papua New Guinea, Pacific
Volcano Tavurvur, Rabaul, East New Britain, Papua New Guinea, Pacific
Singing Dunes, Altyn-Emel National Park, Almaty region, Kazakhstan, Central Asia, Asia
Dramatic coastal geology at Nash Point on the Glamorgan Heritage Coast, South Wales, United Kingdom, Europe
A burst of light briefly illuminates the pinnacles surrounding the Old Man of Storr against an approaching storm, Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Elevated view of the town and the Hill of Seven Colours (Cerro de los Siete Colores), Purmamarca, Jujuy Province, Argentina, South America
Elevated view of the town and the Hill of Seven Colours (Cerro de los Siete Colores), Purmamarca, Jujuy Province, Argentina, South America
Landscape of the Caldeirao do Corvo, Corvo, Azores, Portugal, Atlantic, Europe
A glacial lake and the rock towers that give the Torres del Paine range its name, Torres del Paine National Park, Patagonia, Chile, South America
An evening view of the Giant's Causeway, UNESCO World Heritage Site, County Antrim, Ulster, Northern Ireland, United Kingdom, Europe
Tryfan, viewed from the top of Bristly Ridge on Glyder Fach, Snowdonia, Wales, United Kingdom, Europe
Bedruthan Steps, Cornwall, England, United Kingdom, Europe
The Cabins, Valley of Fire State Park, Overton, Nevada, United States of America, North America
Piles of salt collected from natural salt pans at Salinas, just outside Santa Maria, Sal Island, Cape Verde, Atlantic, Africa
Pure salt in a salt lake, Danakil depression, Ethiopia, Africa
Colourful spings of acid in Dallol, hottest place on earth, Danakil depression, Ethiopia, Africa
Colourful spings of acid in Dallol, hottest place on earth, Danakil depression, Ethiopia, Africa
Colourful spings of acid in Dallol, hottest place on earth, Danakil depression, Ethiopia, Africa
Rocky shoreline on west coast of Isle of Harris, Outer Hebrides, Scotland, United Kingdom, Europe
Rocky shoreline on west coast of Isle of Harris, Outer Hebrides, Scotland, United Kingdom, Europe
Minerals for sale to tourists as souvenirs on side of road in Tiz n Tichka Pass oer Atlas mountains, Morocco, North Africa, Africa
Badlands, Bisti Wilderness, New Mexico, United States of America, North America
Egg Factory at dawn, Bisti Wilderness, New Mexico, United States of America, North America
Badlands, Ah-Shi-Sle-Pah Wilderness Study Area, New Mexico, United States of America, North America
Porth Nanven Cove at the end of the Cot Valley, St. Just, Cornwall, England, United Kingdom, Europe
Columnar basalt lava at Giant's Causeway, UNESCO World Heritage Site, County Antrim, Northern Ireland, United Kingdom, Europe
Rock formations, Arnarstapi, Snaefellsnes Peninsula, Iceland, Polar Regions
Inside the canyon El Boqueron, El Estor, Izabal, Guatemala, Central America
Tam Thanh cave, Lang Son, Vietnam, Indochina, Southeast Asia, Asia
Giant's Causeway, UNESCO World Heritage Site, Bushmills, County Antrim, on the north coast of Northern Ireland, Ulster, Northern Ireland, United Kingdom, Europe
Giant's Causeway, UNESCO World Heritage Site, Bushmills, County Antrim, on the north coast of Northern Ireland, Ulster, Northern Ireland, United Kingdom, Europe
Sunrise over the Old Man of Storr on the Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Needle Rock, one of the basalt columns standing alongside the Old Man of Storr, Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Sunrise over Old Man of Storr on the Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Jagged rocks on the seashore near Lee Bay in winter, North Devon, England, United Kingdom, Europe
Neist Point lighthouse, perched on dramatic cliff tops on the west coast of the Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Jagged basalt peaks near the Old Man of Storr on a foggy autumn morning, Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Large rusted anchor from a shipwreck on rocky seashore, Devon, England, United Kingdom, Europe
Dramatic granite outcrops at Honeybag Tor in Dartmoor National Park in winter, Devon, England, United Kingdom, Europe
Sandstone forms at dawn, Valley of Fire State Park, Nevada, United States of America, North America
Striped red-rock boulders, Hopi Reservation, Arizona, United States of America, North America
Ecocentro, Puerto Madryn, The Welsh Settlement, Chubut Province, Patagonia, Argentina, South America
Ingleborough seen from the limestone pavement on Twistleton Scar, North Yorkshire, England, United Kingdom, Europe
The Gordale beck flowing through the narrow limestone gorge of Gordale Scar, North Yorkshire, England, United Kingdom, Europe
The Cow and Calf rocks and heather covered Ilkley Moor in late summer, West Yorkshire, England, United Kingdom, Europe
The Moeraki Boulders at Moeraki Beach, Otago, South Island, New Zealand, Pacific
The Moeraki Boulders at Moeraki Beach, Otago, South Island, New Zealand, Pacific
The varied geology of rocks at Dunraven Bay, Southerndown, Glamorgan, Wales, United Kingdom, Europe
Sand dunes in Khogno Khan National Park, Mongolia, Central Asia, Asia
Moeraki boulders with a long exposure at Moeraki Beach, Otago, South Island, New Zealand, Pacific
The Moeraki Boulders at sunrise, Moeraki Beach, Otago, South Island, New Zealand, Pacific
Rio Pinturas Canyon, Cave of the Hands, UNESCO World Heritage Site, Patagonia, Province of Santa Cruz, Argentina, South America
The black lava beach with reflected mountain, Bariloche, Patagonia, Argentina, South America
Ilakaka sapphire mine, one of Earth's largest known alluvial sapphire deposits, Ilakaka, Ihorombe Region, Madagascar, Africa
The karst limestone formation at Parc National des Tsingy de Bemaraha, UNESCO World Heritage Site, Tsiribihina region, Madagascar, Africa
Ilakaka sapphire mine, one of Earth's largest known alluvial sapphire deposits, Ilakaka, Ihorombe Region, Madagascar, Africa
Canyon of the Rio Pinturas near Cueva de los Manos, Patagonia, Argentina, South America
Pinturas Canyon, Cave of the Hands, UNESCO World Heritage Site, Patagonia, Province of Santa Cruz, Argentina, South America
Sunset on Piedra Parada (Gualjaina), Chubut Province, Patagonia, Argentina, South America
Stencil hand Paintings, Rio Pinturas Canyon, Cave of the Hands, UNESCO World Heritage Site, Patagonia, Province of Santa Cruz, Argentina, South America
Tree lined river in Pinturas Canyon, Patagonia, Argentina, South America
Three Guanaco in Pinturas Canyon, Patagonia, Argentina, South America
The Canyon of the Rio Pinturas near Cueva de los Manos, Patagonia, Argentina, South America
Pinturas Canyon, Santa Cruz, Patagonia, Argentina, South America
The canyon gorge of Piedra Parada (Gualjaina), Chubut Province, Patagonia, Argentina, South America
Rock formation in the canyon of Piedra Parada (Gualjaina), Chubut Province, Patagonia, Argentina, South America
Devils Bridge, Sedona, Arizona, United States of America, North America
Footpath at Rio Pinturas Canyon, Cave of the Hands, UNESCO World Heritage Site, Patagonia, Province of Santa Cruz, Argentina, South America
Dramatic cliffs of the Anglesey Coast, Anglesey, North Wales, United Kingdom, Europe
Limestone cliffs above Malham Cove in the Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe
Rocky cove on the dramatic North Devon coast in winter, Devon, England, United Kingdom, Europe