Free images results:
 

Footsteps pictures, stock photos and images

 
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Trace Royalty Free Stock Photo
Author: Parentx
Stairway Royalty Free Stock Photos
Author: Vidns123
Pier05 Royalty Free Stock Photo
Author: Blu
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Footsteps Stock Image
Author: Bparren