Exploring the Earth and Sky of the West

Great Sand Dunes National Park, Colorado

  • Great Sand Dunes National Park, Colorado
  • Walking along the dune crests at sunset.
  • Great Sand Dunes National Park, Colorado
  • Looking north towards the Sangre de Cristo Mountains at sunset.
  • Great Sand Dunes National Park, Colorado
  • Great Sand Dunes National Park, Colorado
  • Sunset over the Great Sand Dunes. Note the sunlight catching the thin layer of sand being blown across the surface, no more than a few inches above the ground. Saltation in action!

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