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  1. Desert Landscape
  2. Rock formations in a national park with a river in the background, Desert Point, Grand Canyon National Park, Arizona
  3. California, Morro Bay, the port and Morro Rock
  4. Satellite view of Cape Cod National Seashore area in North Atlantic Ocean, Massachusetts
  5. The Wave Navajo Sandstone Formation Vermilion Cliffs Wilderness AZ
  6. Arkansas - USGS State Mosaic
  7. Florida - USGS State Mosaic
  8. Photography of agate, Stone material, Close Up
  9. Utah, Zion National Park
  10. Michigan - USGS State Mosaic
  11. The Silent City, from Inspiration Point, Bryce Canyon National Park, Utah
  12. Mountain range at the lakeside, Bearhat Mountain, Hidden Lake, Us Glacier National Park, Montana,
  13. Waziristan Hills - USGS Earth as Art
  14. Pink Jewel
  15. Puerto Rico - USGS State Mosaic
  16. Tiger Iron I
  17. Alabama - USGS State Mosaic
  18. Mountain range covered with snow, Valle DAosta, Italy
  19. View of planet Earth from space showing Turks and Caicos Islands and Cuba
  20. Close-up of a larch tree near a lake, Enchantment Lake, East Cascades, Washington State
  21. Castle Geyser erupting, Upper Geyser Basin, Yellowstone National Park, Wyoming
  22. Copper sulphate crystals, LM
  23. Sandstone rock formations in the Valley of Fire State Park, Nevada, USA
  24. Australia - USGS Earth as Art