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September 12, 2009 - Morning Glory Pool Hot Spring, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
September 12, 2009 - Morning Glory Pool Hot Spring, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
September 12, 2009 - Steam rising over Midway Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
Billings Gap Overlook on Blue Mesa towards sunset, Petrified Forest National Park, Arizona, United States of America, North America
Ephemeral Spring on Red Wall of Roaring Springs Canyon, North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America
Red Wall Bridge crossing Roaring Springs Canyon on North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America
A sandstone hoodoo at Bryce Canyon National Park, Utah, USA. Hoodoos are pinnacles of rock shaped by the weather and erosion.
View of the Grand Canyon east of the historic Watch Tower, managed by the National Park Service, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Elk (Cervus canadensis), Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Porcelain Springs, Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
View of Johnson Canyon from the Johnson Canyon Railroad Grade, Kaibab National Forest of Arizona, USA
Evening eruption of Old Faithful geyser with tree and snow, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Rock formation, Green River Overlook, Canyonlands National Park, Moab, Utah, United States of America, North America
Polychrome Mountain range in Denali National Park, Alaska, United States of America, North America
Moraine Creek (River), Katmai National Park and Reserve, Alaska, United States of America, North America
An adult brown bear (Ursus arctos) fishing for salmon at Brooks Falls, Katmai National Park and Preserve, Alaska, United States of America, North America
Grand Prismatic Spring, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The Castle, an iconic sandstone peak forming part of the Waterpocket Fold, autumn, Fruita, Capitol Reef National Park, Utah, United States of America, North America
Visitor dwarfed by landscape of colourful rocks, Artist's Palette, Furnace Creek, Death Valley National Park, California, United States of America, North America
A mother sea otter (Enhydra lutris) with her pup in Reid Inlet, Glacier Bay National Park, Southeast Alaska, United States of America, North America
Hoh Rainforest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America
Grand Canyon view just below the summit of Buggeln Hill on the South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Mounds and cliffs of expansive clay called Bentonite in the Jasper Forest of Petrified Forest National Park, Arizona, United States of America, North America
A rocky pile in Petrified Forest National Park called Newspaper Rock, where some rocks have petroglyphs, Arizona, United States of America, North America
A large petrified log along the Blue Mesa Trail in Petrified Forest National Park, Arizona, United States of America, North America
Panorama view of the Painted Desert from Tawa Point in Petrified Forest National Park, Arizona, United States of America, North America
Panorama of Olmsted Point, off Tioga Pass Road in Yosemite National Park, UNESCO World Heritage Site, California, 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
Adult hoary marmot (Marmota caligata), on the Skyline Trail, Mount Rainier National Park, Washington State, United States of America, North America
Temperate rain forest on the Maple Glade Trail, Quinault Rain Forest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America
Old Chevrolet truck at the Kestner Homestead, Quinault Rain Forest, Olympic National Park, UNESCO World Heritage Site, Washington State, United States of America, North America
Fall color change amongst the trees and shrubs on the Rock Creek Trail in Denali National Park, Alaska, United States of America, North America
Rio Grande River in golden grasses with Chisos Mountains in background, Big Bend National Park, Texas, United States of America, North America
Porcelain Basin, in the Norris Geyser Basin area, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Echinus Spring in the Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Woman taking in the scenery while crossing a bridge in Mount Rainier National Park, Washington State, United States of America, North America
Red rock formations known as hoodoos in Bryce Canyon National Park, Utah, United States of America, North America
A long exposure captures the beautiful landscape in Bryce Canyon National Park during a summer sunrise, Utah, United States of America, North America
Frozen water puddles along the cliffs of Grand Canyon east of the Monument Creek Vista, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Closeup of the historic Agate House in Petrified Forest National Park, Arizona, United States of America, North America
A deep canyon eroded thru the hills of purple and gray bentonite clay near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America
Purple badlands of bentonite near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America
The map sign at the gateway for the Long Logs Trail and Agate House in Petrified Forest National Park, Arizona, United States of America, North America
The paved path, that used to be an old road, leading to the Long Logs Trail and Agate House in Petrified Forest National Park, Arizona, United States of America, North America
A lone hoodoo rock on the edge of a ridge overlooking the Jim Camp Wash on the south end of Petrified Forest National Park, Arizona, United States of America, North America
Arctic squirrel (Citellus parry), Denali National Park, Alaska, United States of America, North America
Pond next to St. Mary Lake, Glacier National Park, Montana, United States of America, North America
Primitive wooden Baptist church (built in 1887), in the old pioneer community at Cades Cove, Great Smoky Mountains National Park, Tennessee, USA
A gap between a stack of balanced boulders on a cliff east of Grandview Point at Grand Canyon South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
An adult yellow-bellied marmot (Marmota flaviventris), in Yellowstone National Park, Wyoming, United States of America, North America
Trail to Angels Landing, Zion National Park, Utah, United States of America, North America
Fresh snow fall on El Capitan in Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
First light on the hills, Zion National Park, Utah, United States of America, North America
Stretching with a yoga pose in White Sands National Park, New Mexico, United States of America, North America
Haleakala National Park, volcanic landscape, Maui Island, Hawaii, United States of America, North America
The landmark in Petrified Forest National Park called Squared Off Butte, a marker on the way to Onyx Bridge, Arizona, United States of America, North America
Grizzly bear (Ursus horribilis) in the fall, Denali National Park and Preserve, Alaska, United States of America, North America
American Bison (Bison Bison) in the snow in the Badlands, Badlands National Park, South Dakota, United States of America, North America
Dead Horse Point overlook, Canyonlands National Park, Utah, USA, North America
Checkerboard Mesa, a sandstone peak standing 900 feet high, in Kane County, Zion National Park, Utah, United States of America, North America
Cathedral Rocks by Merced River, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, Central California, California, United States of America, North America
Zion valley and Virgin River seen from Kayenta trail, Zion National Park, Utah, United States of America, North America
Natural arch, Queens Garden Trail, Bryce Canyon National Park, Utah, United States of America, North America
Scenic view of hoodoos and rock formations from Queens Garden Trail near Sunrise Point, Bryce Canyon National Park, Utah, United States of America, North America
Double Arch in the Windows Section, Arches National Park, Moab, Utah, United States of America, North America
Grand Canyon, near Duck on a rock viewpoint, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grand Canyon, Rim Trail near Mather Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grand Canyon, Pipe Creek Vista, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grand Canyon, Mohave Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grand Canyon, Maricopa Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grand Canyon, from Hermit Road near Great Mohave Wall Viewpoint, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
September 12, 2009 - Plume Geyser eruption, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
September 12, 2009 - Castle Geyser eruption with rainbow, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
September 12, 2009 - Morning Glory Pool Hot Spring, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
September 12, 2009 - Chromatic Pool Hot Spring, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
September 12, 2009 - Grand Prismatic Spring, Midway Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
September 11, 2009 - White Dome Geyser erupting, Lower Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
View of the Roaring Springs Canyon cliffs from the Red Wall Bridge, Grand Canyon North Rim, UNESCO, Arizona, United States of America
The Coconino Overlook along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America
The 11th switchback along the North Kaibab Trail at Grand Canyon North Rim, UNESCO, Arizona, United States of America
Woman hiking around the Zion National Park, Utah, United States of America, North America
Patches of snow in the shade of a hill in Dead Wash at Petrified Forest National Park, Arizona, United States of America
Boulder pile in a valley leading to Dead Wash, Petrified Forest National Park, Arizona, United States of America
Half Dome granite monolith, Merced River, Yosemite Valley, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, California, United States of America, North America
View of the Lincoln Memorial, Washington, D.C., United States of America
Three Sisters, Monument Valley Navajo Tribal Park, Utah, United States of America
Three Sisters, Monument Valley Navajo Tribal Park, Utah, United States of America
West Mitten Butte, Monument Valley Navajo Tribal Park, Utah, United States of America
Merrick Butte, Monument Valley Navajo Tribal Park, Utah, United States of America
John Ford's Point, Merrick Butte in background, Monument Valley Navajo Tribal Park, Utah, United States of America
Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America
Young brown bears (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America
Alaskan brown bears (Ursus arctos) sow and cubs foraging for salmon in the Brooks River, Katmai National Park, Alaska, United States of America
The Natural Bridge Arch at Bryce Canyon National Park, Utah, USA
100 Hands Pictograph Panel, Grand Staircase-Escalante National Park, Utah, United States of America, North America
Reflection Lake, Mount Rainier National Park, Washington State, United States of America, North America
Colourful kayaks, Aialik Glacier, blue ice, Harding Icefield, Kenai Fjords National Park, near Seward, Alaska, United States of America, North America
Sunset View Point, Bryce National Park, Utah, United States of America, North America
Windows Arches, Arches National Park, Moab, Utah, United States of America, North America
Moon Jellyfish (Aurelia aurita), Resurrection Bay, Kenai Fjords National Park, Alaska, United States of America, North America