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Adult humpback whale (Megaptera novaeangliae), flukes-up dive in Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Steller sea lion (Eumetopias jubatus), haul out site, South Marble Islands, Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Steller sea lions (Eumetopias jubatus), haul out site, South Marble Islands, Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Curious Steller sea lions (Eumetopias jubatus), South Marble Islands, Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Glacial ice stranded on the beach at low tide in the East arm of Glacier Bay National Park, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
Balanced Rock at sunset, Big Bend National Park, Texas, 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
Desert sunset panorama with Chisos Mountains in the background, Big Bend National Park, Texas, United States of America, North America
Santa Elena Canyon with golden reflection, Big Bend National Park, Texas, United States of America, North America
Desert view with yucca plant, Big Bend National Park, Texas, United States of America, North America
Grand Canyon viewed from the west side of Maricopa Point along the Hermit Road, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grand Canyon viewed from the east side of Maricopa Point along the Hermit Road, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Nevada Fall waterfall in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
The Merced River at Valley View in spring, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Ancient Western Juniper tree growing on the granite slopes above Olmstead Point in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Ancient Nankoweap granary high above the Colorado River through the Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Balanced rock that resembles a toadstool, petrified wood scattered around the formation, Petrified Forest National Park, Arizona, United States of America, North America
Balanced rock that resembles a toadstool, petrified wood scattered around the formation, Petrified Forest National Park, Arizona, United States of America, North America
Balanced rock that resembles a toadstool, petrified wood scattered around the formation, Petrified Forest National Park, Arizona, United States of America, North America
A giant petrified log on a sandstone pedestal on the edge of the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
Flat top hoodoo on the edge of a cliff along the Billings Gap Trail on Blue Mesa, Petrified Forest National Park, Arizona, 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
Bison grazing along the Theodore Roosevelt National Park North Unit, North Dakota, United States of America, North America
Woman hiking along The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America
Bison in the Theodore Roosevelt National Park South Unit, North Dakota, United States of America, North America
Blood red ridges of Bentonite clay on the east side of Tiponi Point in Petrified Forest National Park, Arizona, United States of America, North America
A dry waterfall made of purple bentonite in the Flat Tops of Petrified Forest National Park, Arizona, United States of America, North America
Storm rolling into Point Imperial at Grand Canyon North Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Belgian Pool, in the Norris Geyser Basin area, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The lower Yellowstone Falls in the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The Yellowstone River surrounded by snow-capped mountains, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, 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
Mammoth Hot Springs Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Porcelain Springs in the Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Belgian Pool, in the Norris Geyser Basin area, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The cone geyser called Old Faithful erupting, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, 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
Steamboat Geyser, the worlds tallest active geyser, steaming in Yellowstone National Park, UNESCO World Heritage Site, Wyoming, 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
Emerald Spring in the Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Geyser, in the Norris Geyser Basin area, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The upper Yellowstone Falls in the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The cone geyser called Old Faithful erupting, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Chromatic Pool, in the Norris Geyser Basin area, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The lower Yellowstone Falls in the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Large storm approaching Blue Mesa in Petrified Forest National Park, viewed from the Red Basin Trail, near Holbrook, Arizona, United States of America, North America
View of Mount Rainier, a stratovolcano in the Cascade Range of the Pacific Northwest, located in Mount Rainier National Park, Washington State, United States of America, North America
The Seward Harbor in Resurrection Bay, gateway to the Kenai Fjords in Kenai Fjords National Park, Alaska, United States of America, North America
A small group of Dall sheep (Ovis dalli) grazing on a mountainside in Denali National Park, Alaska, United States of America, North America
Hoodoo formations in the Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America
Boulders in Devil's Playground called Gnomes of Desolation, Petrified Forest National Park, Arizona, United States of America, North America
Three hoodoos in a triangular formation in Devil's Playground called the Unholy Trinity, Petrified Forest National Park, Arizona, United States of America, North America
Chuckwalla cholla Cholla Cactus Garden, Joshua tree National Park, California USA
Half Dome and Yosemite Valley from Glacier Point, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America
Lightning striking the Sinking Ship at Grand Canyon, viewed from the Buggeln Hill summit, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Grand Canyon viewed from inside a cave between Zuni and Papago Points while a storm is rolling into the area, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
A monsoon storm rolling across Grand Canyon between Zuni Point and Papago Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Snow covered view of the Teton Mountain Range, Grand Teton National Park, Wyoming, USA
Fisheye view of Hance Canyon from the South Rim of Grand Canyon with Grandview Point is on the left, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Storm clouds approaching Lipan Point at Grand Canyon South Rim, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Craggy rock spires overlooking South Rim Gorge, an area between Hance Canyon and the Sinking Ship, which is right of center in the distance, southern most part of Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
North East Branch of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America
A girl admiring the beautiful rock formations in Zion National Park during a summer day, Utah, United States of America, North America
A majestic colorful sky during a summer sunset in Bryce Canyon National Park, Utah, United States of America, North America
A girl admiring the beautiful rock formations in Zion National Park during a summer day, Utah, United States of America, North America
A warning sign to stay on the trail to the historic Agate House in Petrified Forest National Park, Arizona, United States of America, North America
A warning sign to stay on the trail to the historic Agate House in Petrified Forest National Park, Arizona, United States of America, North America
A divide in the trail loop for the Giant Logs trail at Petrified Forest National Park with the Rainbow Forest Museum on upper left, Arizona, United States of America, North America
Steps along the Giant Logs Trail leading to a scenic overlook in Petrified Forest National Park, Arizona, United States of America, North America
Hills of purple and gray bentonite 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
Rock islands above the purple badlands near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America
A solitary rock hoodoo in the purple badlands near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America
A solitary rock hoodoo in the purple badlands near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America
A solitary rock hoodoo in the purple badlands near Hamilili Point on the south end of Petrified Forest National Park, Arizona, United States of America, North America
A sign along the main road pointing the way to the Long Logs Trail, and Agate House, Petrified Forest National Park, Arizona, United States of America, North America
Sign along the path to the Long Logs Trail, marking the Jim Camp Wash along the main road of Petrified Forest National Park, Arizona, United States of America, North America
A circular walkway for the Long Logs Trail in Petrified Forest National Park, Arizona, United States of America, North America
Giant sequoia tree, Sequoia National Park, California, USA, North America
Pinnacles and rock formations caused by erosion, in the Bryce Canyon National Park in Utah, United States of America, North America
Brown Bear, (Ursus arctos), Lake Clark National Park, Alaska, USA
Brown Bear, (Ursus arctos), Lake Clark National Park, Alaska, USA
An adult American red squirrel (Tamiasciurus hudsonicus), in Yellowstone National Park, Wyoming, United States of America, North America
Yellowstone thermal features emit steam backlit by sun, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North AmericaWyoming, USA
Bridalveil Falls, Yosemite National Park, California, USA
An adult great blue heron (Ardea herodias), spears a fish in Shark Valley, Everglades National Park, Florida, 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
Bison, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
A woman strolls along the ridge of a pure white sand dune in White Sands National Park, New Mexico, United States of America, North America
Bull elk (Cervus canadensis) standing in a stream, Rocky Mountain National Park, Colorado, United States of America, North America
Valley with colourful foliage in the Indian summer, Great Smoky Mountains National Park, UNESCO World Heritage Site, Tennessee, United States of America, North America
A rock climber tackles an overhanging crack in a sandstone wall on the cliffs of Indian Creek, a famous rock climbing area in Canyonlands National Park, near Moab, Utah, United States of America, North America
Old church, Cades Cove, Great Smoky Mountains National Park, Tennessee, United States of America, North America
Close up of Engelmann's prickly-pear (Opuntia engelmannii) cactus in bloom, Watchman trail, Zion National Park, Utah, United States of America, North America
Hoodoos in Bryce Canyon amphitheater at sunrise, Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America
Bryce Canyon amphitheater, Inspiration Point, Bryce Canyon National Park, Utah, United States of America, North America
Scenic view of hoodoos and rock formations, Rim Trail near Sunset Point, Bryce Canyon National Park, Utah, United States of America, North America
Dramatic canyon terrain at Grand View Point at dusk, Canyonlands National Park, Utah, United States of America, North America
September 12, 2009 - Castle Geyser eruption with rainbow, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.
September 12, 2009 - Sawmill Geyser, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.