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Clouds over white and salmon sandstone, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Plateau and canyon country rising 2000 feet above the Grand Valley of the Colorado River, part of the Great Colorado Plateau, Colorado National Monument, Colorado, United States of America, North America
Plateau and canyon country rising 2000 feet above the Grand Valley of the Colorado River, part of the Great Colorado Plateau, Colorado National Monument, Colorado, United States of America, North America
Winding mountain road in plateau and canyon country rising 2000 feet above the Grand Valley of the Colorado River, part of the Great Colorado Plateau, Colorado National Monument, Colorado, United States of America, North America
Sipapu Bridge, Natural Bridges National Monument, Utah, United States of America, North America
Yucca growing in rippled sand, White Sands National Monument, New Mexico, United States of America, North America
Male lesser goldfinch (Carduelis psaltria), Chiricahua National Monument, Arizona, United States of America, North America
Female acorn woodpecker (Melanerpes formicivorus), Chiricahua National Monument, Arizona, United States of America, North America
Rock strata in cliffs in Paria River Valley, Grand Staircase-Escalante National Monument, near Page, Arizona, United States of America, North America
Yucca plants on a dune, White Sands National Monument, New Mexico, United States of America, North America
Blooming yucca plants on dunes, White Sands National Monument, New Mexico, United States of America, North America
Sand ripples and yucca in last light, White Sands National Monument, New Mexico, United States of America, North America
Mushroom shaped sandstone spire on an eroded ridge west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America
Navajo sandstone in Lower Calf Creek Falls Trail, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
The colourful hills of the Painted Hills unit in the John Day Fossil Beds National Monument, Oregon, United States of America, North America
Multicoloured strata hill in the Painted Hills unit in the John Day Fossil Beds National Monument, Oregon, United States of America, North America
Silver Creek Canyon in the Agua Fria National Monument. Located north of Black Canyon City Arizona
Tall hoodoo towers in the valley below Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America
Grand Canyon, Monument Creek Vista, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
Man posing for a selfie in front of Kasha-Katuwe Tent Rocks National Monument, New Mexico, United States of America, North America
The Little Teepees on the north side of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America
Slabs of brown sandstone on the summit of Crystal Mesa west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America
A rock spire sculpted by the wind on Crystal Mesa west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America
Saguaro cactus (Carnegiea gigantea) among Mexican gold poppy (Eschscholzia californica mexicana), Organ Pipe Cactus National Monument, Arizona, United States of America, North America
View of the Washington Monument in Washington, D.C., United States of America
View of the Lincoln Memorial, Washington, D.C., United States of America
View of the Lincoln Memorial, Washington, D.C., United States of America
View of the Lincoln Memorial at night, Washington, D.C., United States of America
View of the Lincoln Memorial at night, Washington, D.C., United States of America
View of the Washington Monument at night in Washington, D.C., United States of America
American flags surrounding the Washington Monument in Washington, D.C., United States of America
American flags surrounding the Washington Monument in Washington, D.C., United States of America
American flags surrounding the Washington Monument in Washington, D.C., United States of America
View of the Washington Monument at sunrise in Washington, D.C., United States of America
View of the Washington Monument at sunrise in Washington, D.C., United States of America
View of the interior of the United States Capitol Building, Washington, D.C., United States of America
View of the Washington Monument in Washington, D.C., United States of America
Harbor seals (Phoca vitulina) hauled out on submerged log in Misty Fjords National Monument, Southeast Alaska, United States of America
Lower Calf Creek Falls, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Woman walking along a white sand dune, cast in blue late-afternoon light, in White Sands National Monument, New Mexico, United States of America, North America
View of National Gallery of Art on Pennsylvania Avenue, Washington D.C., United States of America, North America
View from below the historic Bainbridge Steel Dam near Ash Fork, Kaibab National Forest, Arizona, United States of America
White sandstone eroded like a brain, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Petroglyphs, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Multicoloured strata in the Painted Hills unit in the John Day Fossil Beds National Monument, Oregon, United States of America, North America
The colourful hills of the Painted Hills unit in the John Day Fossil Beds National Monument, Oregon, United States of America, North America
Organ pipe cactus (Stenocereus thurberi) at night in Organ Pipe Cactus National Monument, Sonoran Desert, Arizona, United States of America, North America
Owachomo Bridge, Natural Bridges National Monument, Utah, United States of America (U.S.A.), North America
Woman admiring sandstone towers in Kasha-Katuwe Tent Rocks National Monument, New Mexico, United States of America, North America
Time lapse of the Statue of Iwo Jima U.S. Marine Corps Memorial at Arlington National Cemetery, Washington DC, United States of America, North America
Mount St. Helens with wild flowers, Mount St. Helens National Volcanic Monument, Washington State, United States of America, North America
Rudyerd Bay ripples, beautiful summer day, Misty Fjords National Monument, Tongass National Forest, Alaska, United States of America, North America
Early morning reflections in summer, Behm Canal, Misty Fjords National Monument, Tongass National Forest, Ketchikan, Alaska, United States of America, North America
Early morning reflections in summer, Behm Canal, Misty Fjords National Monument, Tongass National Forest, Ketchikan, Alaska, United States of America, North America
Cruise ship, Rudyerd Bay, beautiful day in summer, Misty Fjords National Monument, Tongass National Forest, Ketchikan, Alaska, United States of America, North America
Spider Rock, Canyon de Chelly National Monument, Arizona, United States of America, North America
Square Tower and Hovenweep House in canyon of Hovenweep National Monument, Southeast Utah, United States of America, North America
Junction Overlook, Canyon de Chelly National Monument, Arizona, United States of America, North America
Ancestral Puebloan Petroglyphs, Upper Sand Island, Bears Ears National Monument, Utah, United States of America, North America
The Doll House, Ancestral (Anasazi) Pueblo building, 1150-1250 AD, Bears Ears National Monument, Cedar Mesa, Utah, United States of America, North America
Duckhead Man Petroglyph, Bears Ears National Monument, Utah, United States of America, North America
Duckhead Man Petroglyph, Bears Ears National Monument, Utah, United States of America, North America
View of the Washington Monument and National Mall at sunset, Washington D.C., United States of America, North America
Box Canyon Indian Dwelling with the Lomaki Pueblo ruins in the background, Wupatki National Monument, Arizona, United States of America, North America
Panorama of the Lomaki Pueblo at the Wupatki National Monument, Arizona, United States of America, North America
A low angle exterior view of the Wukoki Pueblo at the Wupatki National Monument, Arizona, United States of America, North America
The Ball Court of the Wupatki Pueblo Ruins at the Wupatki National Monument, Arizona, United States of America, North America
Lomaki Pueblo Ruins, Wupatki National Monument, Arizona, United States of America, North America
Panorama of the San Francisco Peaks north of Flagstaff, viewed from the Citadel Ruins in Wupatki National Monument, Arizona, United States of America, North America
Rainbow Bridge National Monument, Utah, United States of America, North America
Rainbow Bridge National Monument, Utah, United States of America, North America
Cave dwellings on the Cliffside of Pueblo Indian Ruins in Bandelier National Monument, New Mexico, United States of America, North America
Old man walking through the Pueblo Indian Ruins in Bandelier National Monument, New Mexico, United States of America, North America
Cave dwellings on the Cliffside of Pueblo Indian Ruins in Bandelier National Monument, New Mexico, United States of America, North America
Cave dwellings on the Cliffside of Pueblo Indian Ruins in Bandelier National Monument, New Mexico, United States of America, North America
Organ pipe cactus (Stenocereus thurberi) at sunset, Organ Pipe Cactus National Monument, Sonoran Desert, Arizona, United States of America, North America
Organ pipe cactus (Stenocereus thurberi), Organ Pipe Cactus National Monument, Sonoran Desert, Arizona, United States of America, North America
Organ pipe cactus at night with Geminid Meteor Shower, Organ Pipe Cactus National Monument, Arizona, United States of America, North America
Organ pipe cactus (Stenocereus thurberi) at night, Organ Pipe Cactus National Monument, Sonoran Desert, Arizona, United States of America, North America
Organ pipe cactus at night with Geminid Meteor Shower, Organ Pipe Cactus National Monument, Arizona, United States of America, North America
Panorama view from above Sand Hill Spring at Vermilion Cliffs National Monument, with snow covered land in the distance of the Kaibab Plateau, location of the Grand Canyon, Arizona, United States of America, North America
Balanced boulder just below the Upper Soap Creek Bench in Vermilion Cliffs National Monument, Arizona, United States of America, North America
Human footprints in soft sand near the Upper Soap Creek Bench in the Vermilion Cliffs National Monument, Arizona, United States of America, North America
Pioneer Ruins of House Rock at Soap Creek in Vermilion Cliffs National Monument, Arizona, United States of America, North America
Lightning storm rolling across House Rock Valley Road on the west side of Vermilion Cliffs National Monument, Arizona, United States of America, North America
Sign marking the historic Honeymoon Trail in the 7 Mile Draw area of the Vermilion Cliffs National Monument, Arizona, United States of America, North America
Lightning storm rolling into Vermilion Cliffs National Monument viewed from Dominguez Escalante Historical Trailhead, Arizona, United States of America, North America
Pioneer Ruins along Soap Creek in Vermilion Cliffs National Monument, Arizona, United States of America, North America
Lonely Dell Ranch Corral at Vermilion Cliffs National Monument near the Glen Canyon Recreation Area, Arizona, United States of America, North America
Bend in Colorado River near Lee's Ferry, Glen Canyon Recreation Area, Vermilion Cliffs National Monument in background, Arizona, United States of America, North America
Lee's Ferry Road running between Cathedral Rock and Vermilion Cliffs National Monument in Glen Canyon Recreation Area, Arizona, United States of America, North America
Bend in Colorado River near Lee's Ferry, Glen Canyon Recreation Area, Vermilion Cliffs National Monument in background, Arizona, United States of America, North America
Cliffs of Chocolate Canyon at Vermilion Cliffs National Monument, Arizona, United States of America, North America
Antique truck at Lonely Dell Ranch, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Interior of the Lincoln Memorial, National Mall, Washington DC, United States of America, North America
Interior of the Lincoln Memorial, National Mall, Washington DC, United States of America, North America
Spring Canyon in Canyon De Chelly National Monument viewed from the Sliding House Overlook on the south rim, Arizona, United States of America, North America
Interior of an Ancient Hogan used in Navajo ceremonies, in Navajo National Monument, Navajo Indian Reservation northwest of the town of Kayenta, Arizona, United States of America, North America
The Sipapu Bridge (Gateway of the Soul in Hopi), the second highest natural arch in America, Natural Bridges National Monument, Utah, United States of America, North America
The Horse Collar Ruins with a sign warning to not disturb them due to instability, located between the Sipapu Arch Bridge and the Kachina Arch Bridge, Natural Bridges National Monument, Utah, United States of America, North America