Nigerien settlement
Vast expanses such as this Nigerien settlement area require a grid system to effectively survey. The site surveyed by U.S. Army Corps of Engineers Archaeologist Amy Williams and U.S. Air Force Civil Engineer Center Archaeologist Dr. James Wilde was more than 1000 acres.

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Photo by: U.S. Army Corps of Engineers St. Louis District |  VIRIN: 170308-A-CE999-010.JPG