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  1. Sand dunes with Sangre de Cristo Mountains in the background, Colorado
  2. Rock Formation, Cathedral Rock, Coconino National Forest, Arizona
  3. Winter in Yosemite National Park, California
  4. Sand Verbena and Desert Sunflowers, Anza-Borrego Desert State Park, California
  5. Mule Deer (Odocoileus hemionus) male in dry grass, North America
  6. Snowy Owl adult amid dry grass, circumpolar species, British Columbia, Canada
  7. Havasu Falls, Grand Canyon, Arizona
  8. Miette Range and Talbot Lake, Jasper National Park, Canada
  9. East Beckwith Mountain flanked by Aspen forests under cumulus clouds, Colorado
  10. Pacific Rhododendrons and Coast Redwood, Del Norte Coast, California
  11. Badlands, South Unit, Theodore Roosevelt National Park, North Dakota
  12. Single-leaf Pinyon Pine at Toroweap Overlook, Grand Canyon National Park, Arizona
  13. Swift River, White Mountains National Forest, New Hampshire
  14. Panorama of Mammoth Peak and Kuna Crest, Yosemite National Park, California
  15. Shiprock, the basalt core of an extinct volcano, New Mexico
  16. Seastacks on El Matador State Beach, Malibu, California
  17. Waves crashing on Point Dume Beach, California
  18. Red Rock Point, Georgian Bay, Lake Huron, Ontario, Canada
  19. Trumpeter Swan Flapping, Magness Lake, Arkansas
  20. Ocean and lava rocks at sunset, Puuhonua, Hawaii
  21. American White Pelican pair preening in shallow water, Texas Coast, Texas
  22. Bluebonnet and Paintbrush meadow, Cedar Hill State Park, Texas
  23. Milky Way And Barker Pond Trail, Joshua Tree National Park, California
  24. Sand Dunes At Sunset, White Sands, New Mexico
  25. La Sal Mountains and Globemallows, Salt Valley, Arches National Park, Utah
  26. View from the Green River Overlook, Canyonlands National Park, Utah
  27. Aspen (Populus tremuloides) forest in spring, Gunnison National Forest, Colorado
  28. Palmyra Peak reflected in Alta Lake, Colorado
  29. Beavertail Cactus (Opuntia basilaris) flowering, Arizona
  30. Trumpeter Swan Trio Flying, Magness Lake, Arkansas
  31. Orange Sneezeweed and Delphinium in American Basin, Colorado
  32. Opuntia (Opuntia sp) cactus blooming, North America
  33. Mt Rainier reflected in lake, Mt Rainier National Park, Washington
  34. Sacred Lotus (Nelumbo nucifera) flower, native to Asia
  35. Mountain Lion or Cougar walking through a field of red Paintbrush flowers
  36. Snow-covered Aspen forest near Kebbler Pass, Gunnison National Forest, Colorado
  37. American Alligator, North America
  38. Plaza Blanca near Abiquiu, New Mexico
  39. Paradise River surrounded by spring flowers, Mt Rainier National Park, Washington
  40. Sunset over Miette Range and Talbot Lake, Jasper National Park, Alberta, Canada
  41. Magnificent Hummingbird (Eugenes fulgens) female feeding at flower, Costa Rica
  42. Tree reflecting in creek near Black Mesa State Park, Oklahoma
  43. Rio Grande and Sangre de Cristo Mountains, Colorado
  44. Giraffe (Giraffa camelopardalis) trio at sunrise, Masai Mara, Kenya, composite image
  45. Snow Leopard (Uncia uncia) adult portrait in snow, native to Asia
  46. Great Gray Owl perching on a snow-covered branch, British Columbia, Canada
  47. Violet Sabre-wing male hummingbird feeding at flower, Costa Rica
  48. Storm clouds over the Colorado River at Horseshoe Bend near Page, Arizona