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Glacier lily (dogtooth violet) (Erythronium grandiflorum), Glacier National Park, Montana, United States of America, North America

The view to the southeast from Point Sublime after sunset, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Alpine bearberry (Arctostaphylos alpina) in fall color on the tundra, Denali National Park, Alaska, United States of America, North America

Polar bear (Ursus maritimus) mother with twin cubs, Wapusk National Park, Churchill, Hudson Bay, Manitoba, Canada, North America

The Snowdon range from Capel Curig across Llynnau Mymbr (Llyn Mymbyr), Snowdonia National Park, Gwynedd, North Wales, UK, Europe

The top of the volcanic cone of Mount Ngauruhoe in the Tongariro National Park in the Wellington area of the North Island of New Zealand, Australasia

Lake Louise, Banff National Park, UNESCO World Heritage Site, Rocky Mountains, Alberta, Canada, North America

Hiker on Tongariro Crossing trek by Blue Lake under winter ice and snow, Tongariro National Park, UNESCO World Heritage Site, Taupo, South Auckland, North Island, New Zealand, Pacific

Aerial view of the South Rim, Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, USA, North America

Evening light on Sunset Beach Park in English Bay, from Burrard Bridge, Vancouver, British Columbia, Canada, North America

Polar bear (Ursus maritimus) mother with twin cubs, Wapusk National Park, Churchill, Hudson Bay, Manitoba, Canada, North America

Polar bear (Ursus maritimus) mother with twin cubs, Wapusk National Park, Churchill, Hudson Bay, Manitoba, Canada, North America

Polar bear (Ursus maritimus) cubs looking out of the den, Wapusk National Park, Churchill, Hudson Bay, Manitoba, Canada, North America

Late winter hikers on snowfield in South Crater on Tongariro Crossing, Tongariro National Park, UNESCO World Heritage Site, South Auckland, North Island, New Zealand, Pacific

People skating in Central Park, Manhattan, New York City, New York, United States of America (USA), North America

Cliff Geyser erupts from geyserite bank on edge of Firehole River through Black Sand Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Visitor looking over rugged landscape from the Badlands Loop Road near Panorama Point, Badlands National Park, South Dakota, United States of America, North America

Old Anasazi Indian petroglyph, Mystery Valley, Monument Valley Navajo Tribal Park, Utah, United States of America, North America

Petroglyphs near Una Vida, Chaco Culture National Historic Park, UNESCO World Heritage Site, New Mexico, United States of America, North America

View across Nymph Lake at sunrise, with Hallett Peak above the trees, Rocky Mountain National Park, Colorado, United States of America, North America

Lake Quinault, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Father and son hike to Anderson Pass, Enchanted Valley, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

Grass and maple trees in temperate rain forest, Queets River, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America (U.S.A.), North America

East African black rhinoceros (rhinos) sparring, San Diego Wild Animal Park, California, United States of America, North America

Winter landscape, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Close-up of the leaves of a vine maple (Acer circinatum), Mount Rainier National Park, Washington state, United States of America, North America

Landscape with wild flowers, Mount Rainier National Park, Washington state, United States of America, North America

The 12th century Medieval castle, east tower and the 16th century Tudor Mansion, Helmsley, North Yorkshire National Park, Yorkshire, England, United Kingdom, Europe

City skyline, elevated view over Downtown and the Centennial Olympic Park in Atlanta, Georgia, United States of America, North America

Lyretail anthias (Pseudanthias squamipinnis), school over mountain coral, reef, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Leopard torpedo ray (Electric ray) (Torpedo panthera), underside view, back-lit by the sun, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Underwater view of a coral encrusted lobster pot on sandy ocean floor, Ras Mohammed National Park, Red Sea, Egypt, North Africa, Africa

Leopard torpedo ray (Electric ray) (Torpedo panthera), underside view, back-lit by the sun, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Tropical coral reef scene with a leafy cup coral (salad coral) (Turbinaria reniformi), Ras Mohammed National Park, off Sharm el Sheikh, Sinai, Egypt, Red Sea, Egypt, North Africa, Africa

Green sea turtle (Chelonia mydas) resting on sea grass with on-looking scuba divers, Naama Bay, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Shark net set in shallow water, Naama Bay, Ras Mohammed National Park, Sharm El Sheikh, Red Sea, Egypt, North Africa, Africa

Lake Derwentwater, Barrow and Causey Pike, from the boat landings at Keswick, North Lakeland, Lake District National Park, Keswick, Cumbria, England, United Kingdom, Europe

Lake Derwentwater, Catbells, Brandlehow, Causey Pike and Grisdale Pike, from the boat landings at Keswick, North Lakeland, Lake District National Park, Keswick, Cumbria, England, United Kingdom, Europe

Rock Art, Fremont style anthropomorphs dating from AD 500 to 1300, Capitol Reef National Park, Utah, United States of America, North America

Historic Gifford Homestead Barn dating from 1908, Capitol Reef National Park, Utah, United States of America, North America

Fruita Schoolhouse dating from 1896, Capitol Reef National Park, Utah, United States of America, North America

Historic Gifford Homestead Barn dating from 1908, Capitol Reef National Park, Utah, United States of America, North America

Layered sandstone formation, Capitol Reef National Park, Utah, United States of America, North America

Historic Gifford Homestead Barn dating from 1908, Capitol Reef National Park, Utah, United States of America, North America

Historic Gifford Homestead Barn dating from 1908, Capitol Reef National Park, Utah, United States of America, North America

Layered sandstone formation, Capitol Reef National Park, Utah, United States of America, North America

Regenerating trees reflected in a frosty and misty Lewis River at dawn, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Daisy Geyser, one of the most predictable, erupts at an angle, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Turban, Vent and Grand Geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Turban, Vent and Grand Geysers erupt, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Tourists on boardwalk in silhouette, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Mormon Row barn on a clear Autumn (Fall) morning, Antelope Flats, Grand Teton National Park, Wyoming, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Pictograph Panel, Horseshoe Shelter Site, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Pictograph Panel, Horseshoe Shelter Site, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Great Gallery Pictograph Panel, Barrier Canyon Style, Horseshoe Canyon, Canyonlands National Park, Utah, United States of America, North America

Erosion pattern in yellow sandstone under patterned clouds, Valley of Fire State Park, Nevada, United States of America, North America

Desert Bighorn Sheep (Ovis canadensis nelsoni) ram, Valley of Fire State Park, Nevada, United States of America, North America

Desert Bighorn Sheep (Ovis canadensis nelsoni) ram, Valley of Fire State Park, Nevada, United States of America, North America

Desert Bighorn Sheep (Ovis canadensis nelsoni) ram, Valley of Fire State Park, Nevada, United States of America, North America

Desert Bighorn Sheep (Ovis canadensis nelsoni) ewe and two lambs, Valley of Fire State Park, Nevada, United States of America, North America

Pillar arch in yellow sandstone, Valley of Fire State Park, Nevada, United States of America, North America

Crater Lake and Wizard Island at dawn, Crater Lake National Park, Oregon, United States of America, North America

Douglas's Squirrel (Tamiasciurus hudsonicus) eating a pine cone, Olympic National Park, Washington State, United States of America, North America

Pa'rus Trail winds through Zion Canyon in winter, Zion National Park, Utah, United States of America, North America

Aerial of a tuquoise crater lake on top of Mount Ruapehu, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Ski cottage on Mount Ruapehu, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Aerial of a blue lake with Mount Ngauruhoe in the background, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific

Temple of Inscriptions, Palenque Archaeological Park, UNESCO World Heritage Site, Palenque, Chiapas, Mexico, North America

Temple of Inscriptions, Palenque Archaeological Park, UNESCO World Heritage Site, Palenque, Chiapas, Mexico, North America

Glyphic texts, Patio of the Captives, the Palace, Palenque Archaeological Park, UNESCO World Heritage Site, Palenque, Chiapas, Mexico, North America

Temple of the Count, Palenque Archaeological Park, UNESCO World Heritage Site, Palenque, Chiapas, Mexico, North America

Temple XIX, sculptured relief, Palenque Archaeological Park, UNESCO World Heritage Site, Palenque, Chiapas, Mexico, North America