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

Grizzly bear (Ursus arctos horribilis) (Coastal brown bear) sow and spring cub walking along a stream, Katmai National Park and Preserve, Alaska, United States of America, North America

The Giant Petrified Logs of Petrified Forest National Park, located along a trail behind the Rainbow Museum, Arizona, United States of America, North America

El Capitan, a 3000 feet granite monolith on the right, Cathedral Rocks and Cathedral Spires on the left, with the Merced River flowing through flooded meadows of Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, California, United States of America, North America

Misty dawn over Hayden Valley, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

White-Crowned Sparrow (Zonotrichia leucophrys), Yellowstone National Park, Wyoming, United States of America, North America

View over Yosemite National Park with Half Dome, UNESCO World Heritage Site, California, United States of America, North America

Landscape from La Sal Mountains Viewpoint, Arches National Park, Moab, Utah, United States of America, North America

Grizzly (brown) bear (Ursus arctos) at Crescent Lake, Lake Clark National Park and Preserve, Alaska, United States of America, North America

Mormon Row and Teton Range, Grand Teton National Park, Wyoming, United States of America, North America

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

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

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

An adult humpback whale (Megaptera novaeangliae) head-lunging near boat in Kenai Fjords National Park, Alaska, United States of America, North America

Salt covered hills of Bentonite in the Petrified Forest National Park along the Blue Forest Trail, Arizona, United States of America, North America

View from the Blue Mesa Trail in Petrified Forest National Park, Arizona, United States of America, North America

Mounds of a volcanic clay called Bentonite in the Petrified Forest National Park, Arizona, United States of America, North America

Early light on Mount Rainier from the Burroughs Mountain Trail, Mount Rainier National Park, Washington State, United States of America, North America

Views from the Skyline Trail of Mount Rainier National Park, Washington State, United States of America, North America

Roosevelt Elk at Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America

An adult bald eagle (Haliaeetus leucocephalus) taking flight from a rock, Kenai Fjords National Park, Alaska, United States of America, North America

Floating in a raft on the Colorado River, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

A ridge in the Devil's Playground of crumbling hoodoos that resemble Goblins,Petrified Forest National Park, Arizona, United States of America, North America

Panorama of a valley that is the Gateway to the Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America

Grand Canyon at South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Road through Death Valley National Park, Funeral Mountains, California, United States of America, North America

Tourists at Tunnel View, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

A hoodoo formation called Medusa's Child below the cliffs of Agate Plateau in Petrified Forest National Park, Arizona, United States of America, North America

North Rim of Grand Canyon in the distance viewed from west of Pinal Point on the South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Virgin River und Angel's Landing, Zion National Park, Colorado Plateau, Utah, United States of America, North America

Tuolumne River rushing through granite boulders in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Grand Canyon viewed just east of Zuni Point on a stormy day, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View from a flight out to the Bar 10 Ranch, North Rim of Grand Canyon National Park, Arizona, United States of America, North America

The Desert View Watchtower at Grand Canyon viewed from below the cliffs east of Navajo Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Inside the Big Room at Carlsbad Caverns National Park, UNESCO World Heritage Site, located in the Guadalupe Mountains, New Mexico, United States of America, North America

Stalactites in the main cave at Carlsbad Caverns National Park, UNESCO World Heritage Site, located in the Guadalupe Mountains, New Mexico, United States of America, North America

Two of three ponds called the Hearst Tanks, on Grand Canyon South Rim, located one mile east of Grandview Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America North America

Grand Canyon viewed east of Pima Point with Mohave Point on the right, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Grand Canyon viewed from Pima Point at sundown, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Grand Canyon with Yuma Point on the left and Hermits Rest on the right, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Immature little blue heron (Egretta caerulea), Everglades National Park, Florida, United States of America, North America

Tetons with first light in the valley with snow, Grand Teton National Park, Wyoming, United States of America, North America

A moving rock at the Racetrack, a playa or dried up lakebed, in Death Valley National Park, California, United States of America, North America

A rocky peninsula off the cliffs of Grandview Point at Grand Canyon South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View from Moran Point at Grand Canyon South Rim on a cloudy day with Zuni Point on the right in the distance, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Margerie Glacier in Glacier Bay National Park, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America

A pair of mule deer (Odocoileus hemionus) grazing on a hillside in Yellowstone National Park, Wyoming, United States of America, North America

Jogging along a dune's ridge in White Sands National Park, New Mexico, United States of America, North America

Reflection of Half Dome Peak in the Merced River, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Sunrise at the Temple of the Sun and smaller Temple of the Moon in Cathedral Valley, Capitol Reef National Park, Utah, United States of America, North America

American Bison (Bison bison), profile sticking out tongue, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Dead trees in a snowscape with fog and geyser eruption, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Snowscape with stream and trees, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

A coyote is dwarfed by a tall sequoia tree trunk in Sequoia National Park, California, United States of America, North America

Old Faithful geyser erupting, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

The Cathedral Group of Mount Teewinot, Mount Owen and Grand Teton reflected in the Beaver Pond, Schwabacher's Landing, Grand Teton National Park, Wyoming, United States of America, North America

Bull elk (Cervus canadensis), in the snow, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Man gazing out at the view in White Sands National Park, New Mexico, United States of America, North America

Jumping off a sand dune in White Sands National Park, New Mexico, United States of America, North America

Alligator, Everglades National Park, UNESCO World Heritage Site, Florida, United States of America, North America

View over valley with colourful foliage in the Indian summer, Great Smoky Mountains National Park, UNESCO World Heritage Site, Tennessee, United States of America, North America

Hance Creek between Sinking Ship on the left and Coronado Butte right of center right at Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

American alligator (Alligator mississippiensis), at rest beside the Anhinga Trail, Everglades National Park, Florida, United States of America, North America

A climber scales cliffs at Indian Creek in the Utah Desert, Canyonlands National Park, Utah, United States of America, North America

American white pelican (Pelecanus erythrorhynchos) landing, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

View from the summit of Squared Off Butte along the Onyx Trail in Petrified Forest National Park, Arizona, United States of America, North America

Salt pan polygons at Badwater Basin, 282ft below sea level and the lowest place in North America, Death Valley National Park, California, United States of America, North America

Grizzly bear (Ursus arctos horribilis) (Coastal brown bear) cub, Katmai National Park and Preserve, Alaska, United States of America, North America

A petrified log called the Agate Bridge in Petrified Forest National Park, Arizona, United States of America, North America

From Bright Angel Point, North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Starry sky viewed through Broken Arch, Arches National Park, Utah, United States of America, North America

Lower Yellowstone Falls, Yellowstone National Park, Wyoming, United States of America, North America

The Transept Trail sign where it branches off from the Bright Angel Point Trail on the North Rim of Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

View over the Lewis River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Fiery Furnace, a maze like passageway, Arches National Park, Utah, United States of America, North America

The Cliff Palace Indian dwelling, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Hiking the Queens Garden Trail, Bryce Canyon National Park, Utah, United States of America, North America

Traffic on Trans Canada Highway 1, Canadian Rockies, Banff National Park, UNESCO World Heritage Site, Alberta, Canada, North America

West Thumb Geyser Basin in Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Grand Prismstic Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America