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Natural Bridges National Monument, view from Horsecollar Ruin Overlook Trail, Utah, United States of America, North America
Natural Bridges National Monument, Sipapu Bridge, Utah, United States of America, North America
Canyon de Chelly National Monument, View from the Whitehouse Overlook, Arizona, United States of America, North America
Memorial to General George Custer at the Little Bighorn Battlefiled National Monument, Montana, United States of America, North America
White Sands National Monument, New Mexico, United States of America, North America
Natural Bridges National Monument, Sipapu Bridge, Utah, United States of America, North America
Natural Bridges National Monument, Owachomo Bridge, Utah, United States of America, North America
Natural Bridges National Monument, Owachomo Bridge, Utah, United States of America, North America
Petrogylph, Procession Panel, Butler Wash, Shash Jaa National Monument, Utah, United States of America, North America
Lower Calf Creek Falls, Grand Staircase Escalante National Monument, Utah, United States of America, North America
Low tide, Cabrillo National Monument, Point Loma, San Diego, California, United States of America, North America
Low tide, Cabrillo National Monument, Point Loma, San Diego, California, United States of America, North America
Volcanic boulders on Navajo sandstone, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Erosion pattern in Navajo sandstone, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Sunset illuminates the rugged mountainous outcrops of Grand Staircase-Escalante National Monument, Arizona, United States of America, North America
Kasha-Katuwe Tent Rocks National Monument, New Mexico, United States of America, North America
Fort Pulaski National Monument, Savannah, Georgia, United States of America, North America
Kasha-Katuwe Tent Rock National Monument, ladder leading to ancient cave dwelling, 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, View from the Whitehouse Overlook, Arizona, United States of America
Yaadaas Crest Corner Pole, Tlingit totem pole, rainforest, Sitka National Historic Park, Sitka, Baranof Island, Alaska, 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
Sandstone, formations, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Volcanic boulders on Navajo sandstone, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
White Sands National Monument, New Mexico, United States of America, North America
Natural Bridges National Monument, Sipapu Bridge, Utah, United States of America, North America
Canyon de Chelly National Monument, Junction Ruins, Arizona, United States of America, North America
Yellow and salmon sandstone forms, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Sandstone hill with brain texture and a cloud, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Salmon-colored sandstone wall with evergreens, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Red sandstone Coyote Buttes at dawn, Coyote Buttes Wilderness, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Oklahoma City National Memorial and Museum, Oklahoma City, Oklahoma, United States of America, North America
Fort Union National Monument and Santa Fe National Historic Trail, New Mexico, United States of America, North America
Whitetail deer (Odocoileus virginianus) doe, Devil's Tower National Monument, Wyoming, United States of America, North America
Natural Bridges National Monument, Sipapu Bridge, Utah, United States of America, North America
Natural Bridges National Monument, Sipapu Bridge, Utah, United States of America, North America
Canyon de Chelly National Monument, Junction Ruins, Arizona, United States of America, North America
Toadstool Paria Rimrocks at sunset, near Kanab, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Toadstool Paria Rimrocks at sunset, near Kanab, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Evening sun shining through trees in spring, Muir Woods National Monument, California, United States of America, North America
Mount St. Helens, Mount St. Helens National Volcanic Monument, Washington state, United States of America, North America
Fort Union National Monument and Santa Fe National Historic Trail, New Mexico, United States of America, North America
Aztec Ruins National Monument, New Mexico, United States of America, North America
Sandstone, formations, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Dinosaur National Monument, Dinosaur, Utah, United States of America, North America
Sunrise over Navajo sandstone, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Rippled gypsum, sand dunes in the White Sands National Monument, New Mexico, United States of America, North America
White Sands National Monument, New Mexico, United States of America, North America
Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Sandstone layers, Vermillion Cliffs National Monument, Arizona, United States of America, North America
Wagon ruts at Fort Union National Monument and Santa Fe National Historic Trail, New Mexico, United States of America, North America
Juan Rodriguez Cabrillo Statue, Cabrillo National Monument, San Diego, California, United States of America, North America
Devils Tower National Monument, Wyoming, United States of America, North America
Tuzigoot National Monument, Clarkdale, Arizona, United States of America, North America
Stream reflecting first light, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Grosvenor Arch, Cannonville, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Devils Tower National Monument, Wyoming, United States of America, North America
Sandstone hill at dusk, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Devils Tower, Devils Tower National Monument, Wyoming, United States of America, North America
Rock formations in Chiricahua National Monument, Willcox, Cochise County, Arizona, United States of America, North America
Coastline in Cabrillo National Monument, San Diego, California, United States of America, North America
Old Point Loma Lighthouse, Cabrillo National Monument, San Diego, California, 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
Toadstool Paria Rimrocks at sunset, near Kanab, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Whitetail Deer (Odocoileus virginianus) buck in velvet, Devil's Tower National Monument, Wyoming, United States of America, North America
Pecos National Historical Park, New Mexico, United States of America, North America
Red canyon in the background of a little creek, Devils Tower National Monument, Wyoming, United States of America, North America
Montezuma Castle National Monument, Camp Verde, Arizona, United States of America, North America
Tuzigoot National Monument, Clarkdale, Arizona, United States of America, North America
Walker Cove area of Misty Fjords National Monument Wilderness Area, Southeast Alaska, Alaska, United States of America, North America
Walker Cove area of Misty Fjords National Monument Wilderness Area, Southeast Alaska, Alaska, United States of America, North America
Natural Bridges National Monument, Sipapu Bridge, Utah, United States of America, North America
Petroglyph National Monument (Boca Negra Canyon), Albuquerque, New Mexico, United States of America, North America
Owachomo Bridge, Natural Bridges National Monument, Utah, United States of America, North America
Sandstone and red sand, Vermillion Cliffs National Monument, Arizona, United States of America, North America
San Diego Bay viewed from Cabrillo National Monument, Point Loma, San Diego, California, United States of America, North America
Coastline in Cabrillo National Monument, San Diego, California, United States of America, North America
Coastline in Cabrillo National Monument, San Diego, California, United States of America, North America
Hovenweep Castle, Square Tower Group, Anasazi Ruins, dating from AD1230 to 1275, Hovenweep National Monument, Utah, United States of America, North America
Cracked dunes with clouds, White Sands National Monument, New Mexico, United States of America, North America
Devil's Tower, Devil's Tower National Monument, Wyoming, United States of America, North America
Devil's Tower, Devil's Tower National Monument, Wyoming, United States of America, North America
Coastline in Cabrillo National Monument, San Diego, California, United States of America, North America
Devils Tower National Monument, Wyoming, United States of America, North America
Devils Tower National Monument, Wyoming, United States of America, North America
Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Coastline in Cabrillo National Monument, San Diego, California, United States of America, North America
Tide pool area in Cabrillo National Monument, San Diego, California, United States of America, North America
Road leading to the Devils Tower National Monument, Wyoming, United States of America, North America
Devils Tower National Monument, Wyoming, United States of America, North America
Coastline in Cabrillo National Monument, San Diego, California, United States of America, North America
Sand dunes at dusk, White Sands National Monument, New Mexico, United States of America, North America
Suricate (Suricata suricatta), Devils Tower National Monument, Wyoming, United States of America, North America
Petroglyph National Monument (Boca Negra Canyon), Albuquerque, New Mexico, United States of America, North America
Cedar Breaks National Monument, Utah, United States of America, North America
Juan Rodriguez Cabrillo Statue, Cabrillo National Monument, San Diego, California, United States of America, North America
White sand dune, White Sands National Monument, New Mexico, United States of America, North America
Landscape of bare hills in Death Valley National Monument, California, United States of America, North America
Clouds over white and salmon sandstone, White Pocket, Vermilion Cliffs National Monument, Arizona, United States of America, North America
Dead juniper trunk and sandstone cones, Coyote Buttes Wilderness, Vermilion Cliffs National Monument, Arizona, United States of America, North America