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Penstemon flowers, Mount St. Helens, Mount St. Helens National Volcanic Monument, Washington state, 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
Petroglyphs, Canyon de Chelly National Monument, Arizona, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Canyon de Chelly National Monument, Newspaper Rock Petroglyphs, Arizona, United States of America, North America
Barchan dune, 275 square miles of gypsum sand, White Sands National Monument, New Mexico, United States of America (U.S.A.), North America
McKee Spring Petroglyphs, Fremont Style, from AD 700 to AD 1200, Dinosaur National Monument, Utah, United States of America, North America
Cub Creek Petroglyphs, Fremont Style, from AD 700 to AD 1200, Dinosaur National Monument, Utah, United States of America, North America
Cub Creek Petroglyphs, Fremont Style, from AD 700 to AD 1200, Dinosaur National Monument, Utah, United States of America, North America
Jones Hole, Fremont style pictographs, dating from AD 700 to AD 1200, Dinosaur National Monument, Utah, United States of America, North America
Cub Creek Petroglyphs, Fremont Style, from AD 700 to AD 1200, Dinosaur National Monument, Utah, United States of America, North America
McKee Spring Petroglyphs, Fremont Style, from AD 700 to AD 1200, Dinosaur National Monument, Utah, United States of America, North America
Ruins of church, Abo, Salinas Pueblo Missions National Monument, Salinas Valley, New Mexico, United States of America, North America
Church ruins, Abo,Salinas Pueblo Missions National Monument, Salinas Valley, New Mexico, United States of America, North America
Church ruins, Gran Quivira, Salinas Pueblo Missions National Monument, Salinas Valley, New Mexico, United States of America, North America
Church ruins, Gran Quivira, Salinas Pueblo Missions National Monument, Salinas Valley, New Mexico, United States of America, North America
Gran Quivira, Kiva Ruins, Salinas Pueblo Missions National Monument, Salinas Valley, New Mexico, United States of America, North America
Church ruins, Gran Quivira, Salinas Pueblo Missions National Monument, Salinas Valley, New Mexico, United States of America, North America
Gran Quivira, Kiva Ruins, Salinas Pueblo Missions National Monument, Salinas Valley, New Mexico, United States of America, North America
Church, Quarai, Salinas Pueblo Missions National Monument, Salinas Valley, New Mexico, United States of America, North America
Mount Rushmore National Monument, Black Hills, South Dakota, United States of America, North America
Mount Rushmore National Monument, Black Hills, South Dakota, United States of America, North America
Couple kissing, White Sands National Monument, New Mexico, United States of America, North America
Cliff dwellings constructed over 700 years ago, Gila Cliff Dwellings National Monument, New Mexico, United States of America, North America
Cliff dwellings constructed over 700 years ago, Gila Cliff Dwellings National Monument, New Mexico, United States of America, North America
Cliff dwellings constructed over 700 years ago, Gila Cliff Dwellings National Monument, New Mexico, United States of America, North America
Cliff dwellings constructed over 700 years ago, Gila Cliff Dwellings National Monument, New Mexico, United States of America, North America
Cliff dwellings constructed over 700 years ago, Gila Cliff Dwellings National Monument, New Mexico, United States of America, North America
Cliff dwellings constructed over 700 years ago, Gila Cliff Dwellings National Monument, New Mexico, United States of America, North America
Cliff dwellings constructed over 700 years ago, Gila Cliff Dwellings National Monument, New Mexico, United States of America, North America
Cliff dwellings constructed over 700 years ago, Gila Cliff Dwellings National Monument, New Mexico, United States of America, North America
Yucca plant on a dune, White Sands National Monument, New Mexico, United States of America, North America
Yucca plant on dunes, White Sands National Monument, New Mexico, United States of America, North America
Fort Sumter National Monument, Charleston, South Carolina, United States of America, North America
Detail of statue of Iwo Jima Memorial, Arlington National Cemetry, Washington D.C., United States of America, North America
Mount Rushmore National Monument, South Dakota, United States of America, North America
Escarpment and lava beds in El Malpais National Monument, New Mexico, United States of America, North America
Sandstone formation under clouds, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Ridges in sandstone under clouds, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Layered sandstone column under clouds, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Old wagons, Fort Union National Monument, New Mexico, United States of America, North America
Casa Grande (Great House) Ruins National Monument, home to the Sonora Desert people, founded near 400 AD, abandoned about 1450 AD, Coolidge, Arizona, United States of America, North America
Cliff dwelling of Southern Sinagua farmers, built in the early 1100s CE (Common Era), a five storey, 20 room structure, Montezuma Castle National Monument, Arizona, United States of America, North America
Cliff dwelling of Southern Sinagua farmers, built in the early 1100s CE (Common Era), a five storey, 20 room structure, Montezuma Castle National Monument, Arizona, United States of America, North America
Casa Grande (Great House) Ruins National Monument, home to the Sonora Desert people, founded near 400 AD, abandoned about 1450 AD, Coolidge, Arizona, United States of America, North America
Quarai Mission, building began around 1628, Salinas Pueblo Missions National Monument, New Mexico, United States of America, North America
Lomaki Pueblo, inhabited from approximately 1100 AD to 1250 AD, Wupatki National Monument, Arizona, United States of America, North America
Sandstone hill at dawn, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Ruins of Ancestral Puebloans, Square Tower, dating from between 900 AD and 1200 AD, Holly Group, Hovenweep National Monument, Utah, United States of America, North America
Lomaki Pueblo, inhabited from approximately 1100 AD to 1250 AD, Wupatki National Monument, Arizona, United States of America, North America
Kasha-Katuwe Tent Rock National Monument, 14th and 15th century dwellings, New Mexico, United States of America, North America
Kasha-Katuwe Tent Rock National Monument, tent like rock formations, from volcanic eruptions 6 to 7 million years ago, New Mexico, United States of America, North America
Kasha-Katuwe Tent Rock National Monument, tent like rock formations, from volcanic eruptions 6 to 7 million years ago, New Mexico, United States of America, North America
White Sands National Monument, New Mexico, United States of America, North America
US Marines Iwo Jima monument, Arlington National Cemetery, Virginia., United States of America, North America
West Ruin, Aztec Ruins National Monument, dating from between 850 AD and 1100 AD, UNESCO World Heritage Site, New Mexico, United States of America, North America
Open Kiva in West Ruins, Aztec Ruins National Monument, dating from between 850 AD and 1100 AD, UNESCO World Heritage Site, New Mexico, United States of America, North America
Ruins of Ancestral Puebloans, dating from between 900 AD and 1200 AD, Holly Group, Hovenweep National Monument, Utah, United States of America, North America
Canyon de Chelly National Monument, Mummy Cave Ruins, Arizona, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Canyon de Chelly National Monument, Mummy Cave Ruins, Arizona, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Canyon de Chelly National Monument, 200 year old rock paintings of the Spanish , Arizona, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Canyon de Chelly National Monument, View from the Whitehouse Overlook, Arizona, United States of America
Canyon de Chelly National Monument, Blue Bull Cave, pictographs, Arizona, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Canyon de Chelly National Monument, Mummy Cave Ruins, Arizona, United States of America, North America
Canyon de Chelly National Monument, Mummy Cave Ruins, Arizona, United States of America, North America
Canyon de Chelly National Monument, Blue Bull Cave, pictographs, Arizona, United States of America, North America
Red and white sandstone formations under clouds, White Pocket, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Rock formations and dead juniper, Grand Staircase-Escalante National Monument, Utah, 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
Wupatki Pueblo, inhabited from approximately 1100 AD to 1250 AD, Wupatki National Monument, Arizona, United States of America, North America
Kiva in foreground, Wupatki Pueblo, inhabited from approximately 1100 AD to 1250 AD, Wupatki National Monument, Arizona, United States of America, North America
Wukoki Pueblo, inhabited from approximately 1100 AD to 1250 AD, Wupatki National Monument, Arizona, United States of America, North America
First light on a cluster of yucca among the dunes, White Sands National Monument, New Mexico, United States of America, North America
The Mini Wave formation, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Cracked sand dune with a yucca, White Sands National Monument, New Mexico, United States of America, North America
A storm obscures Grand Staircase-Escalante National Monument as it sweeps across Lake Powell and Wahweap Bay, Page, Arizona, United States of America, North America
Sandstone brain rock and red and white swirls at dawn, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Sandstone wave and cones under clouds, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Red and white sandstone formations, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Tree on sandstone silhouetted at sunset with purple clouds, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Orange clouds at sunset over sandstone cones, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Clouds over sandstone cones, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Red and yellow sandstone wave channel, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Brain Rock at dusk, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Juniper and sandstone cones under the stars, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Lakich'inei Pole, Tlingit totem pole, lit by sun in rainforest, Sitka National Historic Park, Sitka, Baranof Island, Alaska, United States of America, North America
Lakich'inei Pole, Tlingit totem pole, lit by sun in rainforest, Sitka National Historic Park, Sitka, Baranof Island, Alaska, United States of America, North America
K'alyaan Pole, Tlingit totem pole, rainforest clearing, summer, Sitka National Historic Park, Sitka, Baranof Island, Alaska, United States of America, North America
Mosquito Legend Pole, Tlingit totem pole, rainforest, summer, Sitka National Historic Park, Sitka, Baranof Island, Alaska, United States of America, North America
K'alyaan Pole, Tlingit totem pole, rainforest clearing, summer, Sitka National Historic Park, Sitka, Baranof Island, Alaska, United States of America, North America
River House Ruin, Ancestral Puebloan Cliff Dwelling, 900-1300 AD, Shash Jaa National Monument, Utah, United States of America, North America
Hovenweep Castle in late afternoon, Ancestral Pueblo, Hovenweep National Monument, Utah, United States of America, North America