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Morning Glory Pool, a geothermal pool, colours are due to algae at temperature bands, hotter below, Yellowstone National Park, Wyoming, USA

The Trans Alaska Oil Pipeline running on refridgerated support to stop oil heat melting the permafrost,Mount Hayes (4116m) and the Alaska Range in the background, Alaska, USA

Peaks of Abraham and Isaac tower above the Virgin River, Court of the Patriarchs, Zion National Park, Utah, USA

Coyote (Canis latrans), weighing 30-40 lbs, less than half the weight of a wolf, Yellowstone National Park, Wyoming, USA

Double rainbow with bear grass in foreground, Hole in the Wall campground, Glacier National Park, Montana, United States of America (U.S.A.), North America

Scotty's Castle, historic Spanish style castle in the north of the park, Death Valley National Park, California, United States of America (U.S.A.), North America

Dawn mist in autumnal colours and hunters cabin closed for the winter, Kenai Peninsula, Alaska, USA, North America

Great Sand Dunes National Monument and Sangre de Cristo Mountains, 700 ft dunes are the tallest in North America, Colorado, USA, North America

Maroon Bells seen from stream rushing to feed Maroon Lake nearby, Aspen, Colorado, Rocky Mountains, USA, North America

Beauvoir, a 19th century ante-bellum mansion, last home of Confederate President Jefferson Davis, Biloxi, Mississippi, USA, North America

Trans Alaska oil pipeline across taiga through Alaskan Range carried on insulated ground piles, Alaska, USA

Old copper mine buildings, preserved national historic site, Kennecott, Wrangel Mountains, Alaska, USA, North America

Mesaverde Sandstone cliff over gullied slopes of grey Mancos Shale, resulting from river erosion, Hanksville, Utah, USA

Saguaro organ pipe cactus and prickly pear cactus, Saguaro National Monument, Tucson, Arizona, USA, North America

Taylor Highway, gravel road through pine forest only opens summer three months into 40 Mile goldfields area, E. Alaska, USA, North America

Juvenile alligator in swampland (bayou) at Jean Lafitte National Historical Park and Preserve, south of New Orleans, Louisiana, USA

Roseate spoonbills (Platalea ajaja), Lagoon, Punta Sur Eco Park, Cozumel Island, Quintana Roo, Mexico, North America

An RV Camper Van Recreational Vehicle travels the highway of Mouse's Tank Road through the Valley of Fire State Park, Nevada, United States of America, North America

Penstemon flowers, Mount St. Helens, Mount St. Helens National Volcanic Monument, Washington state, United States of America, North America

The Trans Alaska Oil Pipeline running on refrigerated support to stop oil heat melting the permafrost, Alaska, United States of America, North America

The Empire State Building, New York, New York State, United States of America (U.S.A.), North America

Aerial view of the South Rim, Grand Canyon, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, USA, North America

City skyline and waterfront, Seattle, Washington State, United States of America (U.S.A.), North America

Niagara Falls on the Niagara River that connects Lakes Ontario and Erie, American Falls on the left, and Horseshoe Falls on the right, New York State, United States of America (U.S.A.), North America

Walkway, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America