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Red leaves on a big tooth maple (Acer grandidentatum) in the fall, Zion National Park, Utah, United States of America, North America

Snake River at the Schwabacher Landing, Grand Teton National Park, Wyoming, United States of America, North America

Mountain goat (Oreamnos americanus), Mount Evans, Arapaho-Roosevelt National Forest, Colorado, United States of America, North America

Cinnamon black bear (Ursus americanus), Yellowstone National Park, Wyoming, United States of America, North America

Tenaya Lake in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Yosemite Valley choked with smoke from the Dog Rock Wildfire, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Pueblo Bonito from 1000-1100 AD, Anasazi site, Chaco Canyon National Monument, New Mexico, United States of America (U.S.A.), North America

Geothermal steam, frosted trees and snow-free hot ground in Norris Basin in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

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

Baby raccoon (Procyon lotor) in captivity, Animals of Montana, Bozeman, Montana, United States of America, North America

Dead tree trunks, Canary Spring, top Main Terrace, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

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

Low clouds glowing orange at sunrise, Crater Lake National Park, Oregon, United States of America, North America

Rocks, sea stacks, and clouds at sunset, Bandon Beach, Oregon, United States of America, North America

Sunset by a sea stack over a pool on the beach, Bandon Beach, Oregon, United States of America, North America

Shi Shi Beach, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America

Porcupine (Erethizon dorsatum), Medicine Bow National Forest, Wyoming, United States of America, North America

Red fox (Vulpes vulpes) in the snow, Grand Teton National Park, Wyoming, United States of America, North America

Cracks in eroded badlands, Badlands National Park, South Dakota, United States of America, North America

Cascades on the partially frozen San Miguel River, San Miguel County, Colorado, United States of America, North America

Young brown bear (Ursus arctos) fishing for pink salmon at low tide in Pavlof Harbour, Chichagof Island, Southeast Alaska, United States of America, North America

Lone hiker near Yavapai Point Overlook, South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

White-tailed ptarmigan (Lagopus leucurus) in summer plumage, San Juan National Forest, Colorado, United States of America, North America

Fog mingling with evergreen trees, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Dusky grouse (blue grouse) (Dendragapus obscurus) hen, Glacier National Park, Montana, United States of America, North America

The Three Brothers mountains reflected in the tranquil waters of the River Merced, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Sunset above Half Dome, viewed from Olmsted Point, in autumn, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Blue columbine (Colorado columbine) (Aquilegia coerulea) in an Alpine basin, San Juan National Forest, Colorado, United States of America, North America

Anza-Borrego Desert State Park, Borrego Springs, California, United States of America, North America

Adult brown bear (Ursus arctos) paw print in the mud at Chichigof Island, southeast Alaska, United States of America, North America

Sunset, Bradenton Beach, Anna Maria Island, Gulf Coast, Florida, United States of America (U.S.A.), North America

View from Schwabacher's Landing across the Snake River to the Teton Range, Grand Teton National Park, Wyoming, United States of America, North America

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

Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

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

Slump Block area in Theodore Roosevelt National Park North Unit, Watford, North Dakota, United States of America, North America

Main Beach, East Hampton, the Hamptons, Long Island, New York State, United States of America, North America

High angle view of Central Park, cityscape looking North, Manhattan, New York City, New York, United States of America, North America

North American elk (Cervus Elaphus) and sand dunes, Great Sand Dunes National Park and Preserve, Sangre Cristo Mountains in background, Colorado, United States of America, North America

Sunset above Yosemite Valley and Half Dome, viewed from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

The Castle and Highway 24, Capitol Reef National Park, Utah, United States of America, North America

Fumaroles (steam vents) in Porcelain Basin, Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Colorado chipmunk (Eutamias quadrivittatus), San Juan National Forest, Colorado, United States of America, North America

Yellow-bellied marmot (yellowbelly marmot) (Marmota flaviventris), Mount Evans, Arapaho-Roosevelt National Forest, Colorado, United States of America, North America

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

Sunrise in the badlands, Theodore Roosevelt National Park, North Dakota, United States of America, North America

Turquoise Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Mist surrounding the forest below Unicorn Peak in autumn, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Poppies, Walker Canyon, Lake Elsinore, Riverside County, California, United States of America, North America

Desert sunflowers, Anza-Borrego Desert State Park, Borrego Springs, California, United States of America, North America

Blooming moon jellyfish (Aurelia aurita), Pond Island in Kelp Bay, Baranof Island, southeast Alaska, United States of America, North America

John Moulton Barn, Mormon Row, Grand Teton National Park, Wyoming, United States of America, North America

View of the Pacific Ocean from Highway 101 to Brookings, Oregon, United States of America (U.S.A.), North America

Wailuku River Rainbow Falls State Park on the Big Island, Hawaii, United States of America, North America

Unicorn Peak reflected in the snow melt pools on Tuolumne Meadows, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

A green sea turtle (Chelonia mydas) on Laniakea Beach, North Shore, Oahu, Hawaii, United States of America, Pacific

Bighorn sheep (Ovis canadensis) ram eating in the winter, Yellowstone National Park, Wyoming, United States of America, North America

Wilson Peak in the winter, Uncompahgre National Forest, Colorado, United States of America, North America

Red Fox (Vulpes vulpes) (Vulpes fulva) in the snow, Grand Teton National Park, Wyoming, United States of America, North America

Red leaves on a big tooth maple branch in the fall, Zion National Park, Utah, United States of America, North America

Acadia National Park, Mount Desert Island, Maine, New England, United States of America, North America

View from Cadillac Mountain, Acadia National Park, Mount Desert Island, Maine, New England, United States of America, North America

Toadstool Paria Rimrocks with yucca plant, near Kanab, Grand Staircase-Escalante National Monument, Utah, United States of America, North America

Grand View Point overlook and juniper tree, Island in the Sky, Canyonlands National Park, Utah, United States of America, North America

Male mountain bluebird (Sialia currucoides), Mount Evans, Arapaho-Roosevelt National Forest, Colorado, United States of America, North America

Rosy paintbrush (split-leaf Indian paintbrush) (spliteaf Indian paintbrush) (Castilleja rhexifolia), San Juan National Forest, Colorado, United States of America, North America

Grizzly bear (Ursus arctos horribilis) sow and yearling cub, Glacier National Park, Montana, United States of America, North America

Two mountain goat (Oreamnos americanus) kids playing, Mount Evans, Arapaho-Roosevelt National Forest, Colorado, United States of America, North America

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

Female Williamson's sapsucker (Sphyrapicus thyroideus) at its nest hole, Yellowstone National Park, Wyoming, United States of America, North America

Granite domes of Yosemite reflected in the calm waters of Tenaya Lake, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

An adult pigeon guillemot (Cepphus columba), with captured fish in Inian Pass, Cross Sound, Alaska, United States of America, North America

Adult sea otters (Enhydra lutris kenyoni) preening in the Inian Islands, Southeast Alaska, United States of America, North America

An adult American red squirrel (Tamiasciurus hudsonicus), on Chichagof Island, Alaska, United States of America, North America

Adult black-legged kittiwakes (Rissa tridactyla), South Marble Islands, Glacier Bay National Park, Alaska, United States of America, North America

Bison (Bison bison), Theodore Roosevelt National Park, North Dakota, United States of America, North America

Figure shows scale of the trunk of giant sequoia tree in the Giant Forest, Sequoia National Park, California, United States of America (U.S.A.), North America

Eruption of Riverside Geyser seen from Firehole River bridge, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

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

Rainbow cast by eruption of Riverside Geyser, Firehole River, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Sawmill Geyser erupts, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

View down Zion Canyon from trail to Angels Landing at dawn, Zion National Park, Utah, United States of America, North America

Opossum (Didelphis virginiana) mother and babies, in captivity, Sandstone, Minnesota, United States of America, North America