View of wetlands from the boardwalk at Blackwater National Wildlife Refuge in Maryland

View of wetlands from the boardwalk at Blackwater National Wildlife Refuge in Maryland.

View of wetlands from the boardwalk at Blackwater National Wildlife Refuge in Maryland

View of wetlands from the boardwalk at Blackwater National Wildlife Refuge in Maryland.
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Photo By/Credit
Michael Carlo/USFWS
Media Usage Rights/License
Public Domain