832-208452 - Chalk stratum in the chalk cliffs in the Jasmund National Park, Jasmund peninsula, Ruegen Island, Mecklenburg-Western Pomerania, Germany, Europe

832-200607 - Rock wall, Uluru, Ayers Rock, Uluru-Kata Tjuta National Park, Northern Territory, Australia

832-190225 - Antelope Canyon, Page, Arizona, United States

832-188150 - Sea of lava in Timanfaya National Park, Caldera Blanca at back, Lanzarote, Canary Islands, Canary Islands, Spain, Europe

832-188149 - Sea of lava in Timanfaya National Park, Lanzarote, Caldera Blanca at back, Canary Islands, Spain, Europe

832-190228 - Antelope Canyon, Page, Arizona, United States

832-190226 - Antelope Canyon, Page, Arizona, United States

832-190229 - Antelope Canyon, Page, Arizona, United States

832-191125 - Pinnacles, limestone formations, Nambung National Park, Western Australia

832-191124 - Pinnacles, limestone formations, sunset, Nambung National Park, Western Australia

832-179212 - Interior of Ali Sadr Cave, Hamadan, Hamedan, Persia, Iran, Asia

832-179389 - Arctic tundra at Maxwell Bay, Devon Island, Northwest Passage, Nunavut, Canada, Arctic

832-179378 - Mountain and sedimentary rocks at Cuming Inlet, Devon Island, Northwest Passage, Nunavut, Canada, Arctic

832-179387 - Hikers on permafrost and arctic tundra at Maxwell Bay, Devon Island, Northwest Passage, Nunavut, Canada, Arctic

832-179211 - Interior of Ali Sadr Cave, Hamadan, Hamedan, Persia, Iran, Asia

832-179210 - Interior of Ali Sadr Cave, Hamadan, Hamedan, Persia, Iran, Asia

832-179213 - Interior of Ali Sadr Cave, Hamadan, Hamedan, Persia, Iran, Asia

832-179567 - Interior of Ali Sadr Cave, Hamadan, Hamedan, Persia, Iran, Asia

832-190224 - Antelope Canyon, Page, Arizona, United States

832-161798 - Devils Marbles, Red Center, Northern Territory, Australia

832-169564 - Crevice inside Weano Gorge, Pilbara, Northwest Australia

832-154377 - Peak of the active volcano Ol Doinyo Lengai, 2960m, Tanzania, Africa

832-154372 - Eroded landscape around the volcano Ol Doinyo Lengai, 2960 m, Tanzania, Africa

832-154378 - Peak of the active volcano Ol Doinyo Lengai, 2960m, Tanzania, Africa

832-150929 - Pinnacle sandstone formations, Nambung National Park, Western Australia, Australia

832-150715 - Stromatolites, Earth's oldest fossils, Hamelinbay, Northwest Australia

832-153370 - Saalfelder Feengrotten or Saalfeld Fairy Grottoes, Saalfeld, Thuringia, Germany, Europe

832-154375 - The active volcano Ol Doinyo Lengai in the East African Great Rift Valley, 2960m, Tanzania, Africa

832-150926 - Pinnacle sandstone formations, Nambung National Park, Western Australia, Australia

832-150716 - Stromatolites, Earth's oldest fossils, Hamelinbay, Northwest Australia

832-154376 - The active volcano Ol Doinyo Lengai in the East African Great Rift Valley, 2960m, Tanzania, Africa

832-153729 - Accessible cave with a small waterfall and lake, Grotte aux Fees, Valais, Switzerland, Europe

832-154374 - View from Ngorongoro Crater Highlands on Ol Donyo Lengai, Gelai, Keremassi and Mount Meru volcanoes, East African Rift, Tanzania, Africa

832-154382 - Dark magma extruding from one of the chimneys of the volcano Ol Doinyo Lengai, 2960m, Tanzania, Africa

832-150928 - Pinnacle sandstone formations, Nambung National Park, Western Australia, Australia

832-149880 - Holy mountain "Man", UNESCO World Heritage Tsodilo Hills, Botswana, Africa

832-148306 - Gorge of the River Tarn, Gorges du Tarn, Cevennes, France, Europe

832-133406 - Rocky village of Tuechersfeld in the Franconian Switzerland, Bavaria, Germany, Europe

832-135232 - Tourists at Firehole River, Yellowstone National Park, Wyoming, USA

832-131096 - Mountain bikers cycling in Goereme, Cappadocia, Turkey

832-131100 - Mountain bikers in Love Valley, Guevercinlik Valley, Goereme, Cappadocia, Turkey

832-135102 - Oxararfoss waterfall on Mid-Atlantic Rift, Thingvellir National Park, Iceland, Europe

832-135101 - Caravan, Mid-Atlantic Rift zone, Thingvellir National Park, Iceland, Europe

832-135224 - Tourists at Black Sand Basin, Yellowstone National Park, Wyoming, USA

832-133723 - Abraded stones with river water, Lavertezzo, Valle Verzasca, Verzasca Valley, Ticino, Switzerland, Europe

832-131097 - Mountain bikers in Love Valley, Guevercinlik Valley, Goereme, Cappadocia, Turkey

832-131099 - Mountain bikers cycling in Love Valley, Guevercinlik Valley, Goereme, Cappadocia, Turkey

832-126192 - Volcanic crater, island of San Antao, Cabo Verde, Cape Verde, Africa

832-128542 - View from the geological hiking trail on the peak of Mt. Hoher Kasten in the Appenzell Alps, Appenzell Inner-Rhodes, Switzerland, Europe

832-126231 - Hvitserkur sea stack, Vatnsnes Peninsula, Iceland, Europe

832-126528 - Sandstone cliffs of Cap Blanc, Nouadhibou, Mauretania, northwestern Africa

832-126325 - Sandstone rock formations, Tsingy, Ankarafantsika National Park, Madagascar, Africa

832-128500 - The Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-126148 - Fossilized plants, Tasset, Algeria, Africa

832-128501 - Maerjelensee, a glacial lake on the eastern edge of the Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-126149 - Fossilized plants, Tasset, Algeria, Africa

832-128490 - View from the Aletsch Panorama Trail down to the 23, 1 km long Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-128504 - Sink from the previous Maerjelensee, a glacier lake on the eastern edge of the Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-128545 - View from the geological hiking trail on the peak of Mt. Hoher Kasten in the Appenzell Alps, Appenzell Inner-Rhodes, Switzerland, Europe

832-128505 - Maerjelensee, a glacial lake on the eastern edge of the Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-128433 - Sandstone cave above the pilgrimage shrine of Our Lady of the Rock in Aachtobel Nature Reserve, Lake Constance District, Baden-Wuerttemberg, Germany, Europe

832-128496 - View from Bettmerhorn Mountain over the western end section of the Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-128503 - Maerjelensee, a glacial lake on the eastern edge of the Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-128543 - View from the geological hiking trail on the peak of Mt. Hoher Kasten in the Appenzell Alps, Appenzell Inner-Rhodes, Switzerland, Europe

832-128498 - The 23, 1 km long Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-128502 - Glacial sink or dip created during the Ice Age on the eastern edge of the Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-128499 - Guidepost for hikers on the Aletsch Panorama Trail, above the Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-128497 - The 23, 1 km long Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-128434 - Sandstone cave above the pilgrimage shrine of Our Lady of the Rock in Aachtobel Nature Reserve, Lake Constance District, Baden-Wuerttemberg, Germany, Europe

832-128491 - View from the Aletsch Panorama Trail down to the 23, 1 km long Aletsch Glacier, Canton of Valais, Switzerland, Europe

832-126207 - Hvitserkur sea stack, Vatnsnes Peninsula, Iceland, Europe

832-126276 - Suspension bridge over rock formations, Tsingy, Ankarana, Madagascar, Africa

832-126527 - Sandstone cliffs of Cap Blanc, Nouadhibou, Mauretania, northwestern Africa

832-124306 - Totem Pole rock formation in the morning, Monument Valley, Arizona, USA, America

832-124299 - Echo Point Ruins, about 1000 years old, Monument Valley, Arizona, USA, America

832-124415 - Balanced Rock, Arches National Park, Utah, Southwest, USA

832-110184 - Palette Spring Terrace, Lower Terraces, limestone sinter terraces, geysers, hot springs, colorful thermophilic bacteria, microorganisms, dead trees, Mammoth Hot Springs Terraces, Yellowstone National Park, Wyoming, United States of America, USA

832-124295 - Rock shapes, colours and structures in Antelope Slot Canyon, Arizona, USA

832-123920 - Opalescent Pool, geyser, drainage area with coloured thermophilic bacteria, microorganisms, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

832-123922 - Sapphire Pool, geyser, Biscuit Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

832-123931 - Tourists on a boardwalk amidst the steam of the springs and geysers, Black Sand Basin, Upper Geyser Basin, Yellowstone National Park, Wyoming, United States of America, USA

832-124288 - Sunset at Grand Canyon North Rim, Cape Royal, Arizona, USA

832-124393 - Rock formations and hoodoos in the morning, Sunrise Point, Bryce Canyon National Park, Utah, United States, America

832-124381 - Landscape Arch rock formation in the morning in a stormy atmosphere, Arches National Park, Utah, United States, America

832-124435 - Rock formations and hoodoos in the evening, Bryce Canyon National Park, Sunset Point, Utah, USA, America

832-124425 - Rock formations and hoodoos in the evening, Bryce Canyon National Park, Sunset Point, Utah, USA, America

832-124426 - Rock formations and hoodoos in the evening, Bryce Canyon National Park, Sunset Point, Utah, USA, America

832-124416 - View towards the rocks with the Turret Arch at sunrise, Arches National Park, Utah, Southwest USA

832-124290 - Sunrise at Grand Canyon North Rim, Toroweap Point, Arizona, USA

832-124412 - Panorama view, Landscape Arch at sunrise and approaching thunderstorm, Arches National Park, South West, USA

832-124384 - Balanced Rock rock formation in the morning, Arches National Park, Utah, United States, America

832-124378 - Rock formations and hoodoos, Bryce Canyon in the morning, Bryce Point, Utah, United States, America

832-124382 - Landscape Arch rock formation in the morning in a stormy atmosphere, Arches National Park, Utah, United States, America

832-124411 - Rock formations and hoodoos, Bryce Canyon at sunrise, Bryce Point, Utah, Southwest, USA

832-124303 - Looking through the North Window at the Buttes in Monument Valley, Arizona, USA, America, America

832-124387 - Morning at Yaki Point, Grand Canyon South Rim, South Rim, Arizona, United States, America

832-124291 - Grand Canyon North Rim, Toroweap Point, Colorado River, Arizona, USA

832-124386 - Turret Arch rock formation, Arches National Park, Utah, United States, America

832-124289 - Sunset at Grand Canyon North Rim, Bright Angel Point, Arizona, USA

832-124294 - Rock shapes, colours and structures in Antelope Slot Canyon, Arizona, USA