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  1. Sand dunes with Sangre de Cristo Mountains in the background, Colorado
  2. Moon over Carson Range with Carson River, Nevada
  3. Storm clouds over the Colorado River at Horseshoe Bend near Page, Arizona
  4. Havasu Falls, Grand Canyon, Arizona
  5. Storm clouds over South Llano River, South Llano River State Park, Texas
  6. Violet Sabre-wing male hummingbird feeding at flower, Costa Rica
  7. Full moon over Mono Lake with tufa towers and the eastern Sierra Nevada Mountains
  8. Spring Mountains, Red Rock Canyon National Conservation Area near Las Vegas, Nevada
  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. Trumpeter Swan Flapping, Magness Lake, Arkansas
  13. Damselfish, Basslet School And Seaweed, Bohol Island, Philippines
  14. Snowy Owl adult amid dry grass, circumpolar species, British Columbia, Canada
  15. Prickly Poppy, Sand Bluebonnet, Pointed Phlox and Squaw-weed Hill Country, Texas
  16. Old Faithful geyser spouting, Yellowstone National Park, Wyoming
  17. Coastal rocks, Bahia Honda Key, Florida
  18. Ruby Range, Lost Lake Slough, Colorado
  19. Orange Sneezeweed and Delphinium in American Basin, Colorado
  20. Green Sea Turtle (Chelonia mydas), Balicasag Island, Philippines
  21. Mt Rainier, Cascade Mountains, Washington
  22. Siberian Tiger (Panthera tigris altaica) leaping across river, Asia
  23. Natural bridge on El Matador State Beach, California
  24. Shiprock, the basalt core of an extinct volcano, New Mexico
  25. Opuntia cactus and other desert vegetation, Kofa National Wildlife Refuge, Arizona
  26. Mt Rainier seen at sunrise, Mt Rainier National Park, Washington
  27. Mount Whitney and the Sierra Nevada from Alabama Hills, California
  28. La Plata River, La Plata Canyon, San Juan National Forest, Colorado
  29. Aspen (Populus tremuloides) forest in spring, Gunnison National Forest, Colorado
  30. Yellow-bellied Slider turtle, portrait, on rock, North America
  31. Hoodoos In Winter, Bryce Canyon National Park
  32. Pyramid Mountain and forest reflected in Patricia Lake, Jasper National Park, Canada
  33. Crashing waves at Garrapata State Beach, Big Sur, California
  34. Steaming hot springs, Midway Geyser Basin, Yellowstone National Park, Wyoming
  35. Palm trees line Penca Beach, Costa Rica
  36. Red Mountain gets its color from iron ore in the rock, Gray Copper Gulch, Colorado
  37. Rio Chama in autumn, New Mexico
  38. Roatan Island, Honduras
  39. Green Sea Turtle (Chelonia mydas) and fish, Sabah, Malaysia
  40. Gunnison National Forest in fall Colorado
  41. Colorado River from Toroweap Overlook, Grand Canyon National Park, Arizona
  42. Moon setting, Playa Carillo, Guanacaste, Costa Rica
  43. Landscape view, Monument Valley Navajo Tribal Park, Arizona
  44. Magnificent Hummingbird (Eugenes fulgens) female feeding at flower, Costa Rica
  45. Cottonwood Tree and Sandhill Crane flock, Bosque del Apache, New Mexico
  46. Morro Rock at Morro Bay, California
  47. Ponderosa Pine trees after fresh snowfall, Rocky Mountain National Park, Colorado
  48. California Poppies in rocky grassland, Canyon Hills, Santa Ana Mountains, California