A flock of Sandhill Cranes flies over in the Great Sand Dunes National Park in Colorado. Over 20,000 cranes spend part of their spring and fall each year in this valley.

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Size: 5000px × 3225px
Location: Sand Dunes National Park, Walden, Colorado, USA
Photo credit: © NPS Photo / Alamy / Afripics
License: Royalty Free
Model Released: No

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