Free images results:
 

Parks pictures, stock photos and images

 
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Squirrel Stock Photo
Author: Armand
Lonely Tree Stock Photography
Author: Nitzu
Alley Royalty Free Stock Photos
Author: Tuulum
Solitude Stock Photo
Author: Cjashar
Off season Stock Photos
Author: Zabek
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Parks Stock Image
Author: Mousedeer