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  1. Storm clouds over the Colorado River at Horseshoe Bend near Page, Arizona
  2. Havasu Falls, Grand Canyon, Arizona
  3. Full moon over Mono Lake with tufa towers and the eastern Sierra Nevada Mountains
  4. Teddy Bear Cholla under stormy skies, Joshua Tree National Park, California
  5. Violet Sabre-wing male hummingbird feeding at flower, Costa Rica
  6. Spring Mountains, Red Rock Canyon National Conservation Area near Las Vegas, Nevada
  7. Storm clouds over South Llano River, South Llano River State Park, Texas
  8. Hoodoos In Winter, Bryce Canyon National Park
  9. Mammoth Peak, Upper Dana Meadow, Yosemite National Park, California
  10. Marsh at sunrise over Eagle Bay, St Joseph Peninsula, Florida
  11. Sandstone Cliff, Kodachrome Basin State Park, Utah
  12. Damselfish, Basslet School And Seaweed, Bohol Island, Philippines
  13. Ruby Range, Lost Lake Slough, Colorado
  14. Coastal rocks, Bahia Honda Key, Florida
  15. Old Faithful geyser spouting, Yellowstone National Park, Wyoming
  16. Orange Sneezeweed and Delphinium in American Basin, Colorado
  17. Prickly Poppy, Sand Bluebonnet, Pointed Phlox and Squaw-weed Hill Country, Texas
  18. Rio Chama in autumn, New Mexico
  19. Siberian Tiger (Panthera tigris altaica) leaping across river, Asia
  20. Bridal Veil Falls, Yosemite National Park, California
  21. Snowy Owl adult amid dry grass, circumpolar species, British Columbia, Canada
  22. Natural bridge on El Matador State Beach, California
  23. Landscape view, Monument Valley Navajo Tribal Park, Arizona
  24. Shiprock, the basalt core of an extinct volcano, New Mexico
  25. North Clear Creek Falls, Rio Grande National Forest, Colorado
  26. Opuntia cactus and other desert vegetation, Kofa National Wildlife Refuge, Arizona
  27. Mt Rainier seen at sunrise, Mt Rainier National Park, Washington
  28. Green Sea Turtle (Chelonia mydas), Balicasag Island, Philippines
  29. Mount Whitney and the Sierra Nevada from Alabama Hills, California
  30. La Plata River, La Plata Canyon, San Juan National Forest, Colorado
  31. Aspen (Populus tremuloides) forest in spring, Gunnison National Forest, Colorado
  32. Mt Rainier, Cascade Mountains, Washington
  33. Red Mountain gets its color from iron ore in the rock, Gray Copper Gulch, Colorado
  34. Pyramid Mountain and forest reflected in Patricia Lake, Jasper National Park, Canada
  35. Yellow-bellied Slider turtle, portrait, on rock, North America
  36. Steaming hot springs, Midway Geyser Basin, Yellowstone National Park, Wyoming
  37. Crashing waves at Garrapata State Beach, Big Sur, California
  38. Palm trees line Penca Beach, Costa Rica
  39. Green Sea Turtle (Chelonia mydas) and fish, Sabah, Malaysia
  40. Roatan Island, Honduras
  41. Moon setting, Playa Carillo, Guanacaste, Costa Rica
  42. Magnificent Hummingbird (Eugenes fulgens) female feeding at flower, Costa Rica
  43. Cottonwood Tree and Sandhill Crane flock, Bosque del Apache, New Mexico
  44. Indian Peafowl male with tail fanned out in courtship display, native to Asia
  45. Morro Rock at Morro Bay, California
  46. Mandarin Duck (Aix galericulata) male and female, Jurong Bird Park, Singapore
  47. Common Sunflower (Helianthus annuus) group showing symmetrical seed heads, North America
  48. Starry sky with silhouetted Oak tree