Natural material that washes up on beaches, such as seaweed, can be used to support the development of man-made dunes. This natural material, known as wrack, is added incrementally to the dunes to mimic the natural growth of dunes. (U.S. Army Corps of Engineer photo by Khary Ratliff)

Download Image: Full Size (1.49 MB)
Photo by: Khary Ratliff |  VIRIN: 230714-A-EN999-004.JPG