View of the waters surrounding Nightingale Island, part of the Tristan da Cunha Group, South Atlantic Ocean

Archaeological site of Ollantaytambo, Ollantaytambo District, Sacred Valley, Urubamba Province, Cusco (Cuzco) Region, Peru, South America

Views of Fortuna Bay on the northern coast of South Georgia, Southern Ocean, Polar Regions

El Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe

Adult male yellow warbler (Dendroica petechia aureola) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

A view of Johns Hopkins Glacier against the Fairweather Range in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Alaska, United States of America, North America

A view of Margerie Glacier against the Fairweather Range in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Alaska, United States of America, North America

Views of Austfonna, an ice cap located on Nordaustlandet in the Svalbard archipelago in Norway, Arctic, Europe

Views of the Vasilievbreen (Vasiliev Glacier), in Isbukta (Ice Bay) near the island of Spitsbergen in Svalbard, Norway, Arctic, Europe

Mountainous fjord, Kulusuk, Greenland, Denmark, Polar Regions

Aerial of a glacier, Kulusuk, Greenland, Denmark, Polar Regions

Snow desert in Axel Heiberg island, Nunavut, Canadian Arctic, Canada, North America

Aerial of Axel Heiberg island, Nunavut, Canadian Arctic, Canada, North America

Grounded iceberg near Wiencke Island in the Palmer Archipelago, Antarctica, Southern Ocean, Polar Regions

A view of Tarr Inlet in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America

Trail leading through valley to Rainbow Mountain, Uchullujllo, Pitumarca District, Canchis Province, Cuzco Region, Peru, South America

Slopes of the Quiraing, a geological wonder, its distinctive features resulting from landslips of basalt lavas upon softer sedimentary rocks beneath, northeast coast of Trotternish Peninsula, Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe

Slopes of the Quiraing, a geological wonder, its distinctive features resulting from landslips of basalt lavas upon softer sedimentary rocks beneath, northeast coast of Trotternish Peninsula, Isle of Skye, Inner Hebrides, Scotland, United Kingdom, Europe

Streaky bacon limestone solution feature, Minchin Hole, Southgate, Gower, West Glamorgan, Wales, UK, Europe

Gran Cenote de Tulum in Yucatan Peninsula, Quintana Roo, Mexico. There are thousands of cenotes dotted all over Mexico���s Yucatan Peninsula, and their existence is as much a defining characteristic of the region as is the distinct geological feature from which they result. Once revered by the ancient Mayans as sacred wells, they are now magnets for tourists, adventurers, and explorers alike.

Strokkur geyser erupting, in the Geysir hot springs area, Haukadalur geothermal area, Southwest Iceland

Strokkur geyser erupting, in the Geysir hot springs area, Haukadalur geothermal area, Southwest Iceland

Moeraki Boulders, geological feature, round rock balls, washed by the waves of the surf at high tide, Coastal Otago, Moeraki, South Island, New Zealand, Oceania

Moeraki Boulders, geological feature, round rock balls, washed by the waves of the surf at high tide, Coastal Otago, Moeraki, South Island, New Zealand, Oceania

Moeraki Boulders, geological feature, round rock balls, some fragments lying broken in ruins on the beach, Coastal Otago, Moeraki, South Island, New Zealand, Oceania

Hiker in blue jacket navigating rocky landscape near a small waterfall on mount txindoki, showcasing the rugged beauty of gipuzkoa, basque country

Moeraki Boulders, geological feature, round rock balls, some fragments lying broken in ruins on the beach, Coastal Otago, Moeraki, South Island, New Zealand, Oceania