With extremely accurate point surveys, it is possible to see the sites with amazing accuracy and likeness. Shown below at relative scale to one another and to the LSU Tower are the three main types of mounds visible through the modeling process: conical, pyrimidial, and combination.
Large Mound at WatsonBrake
LSU Tower
Large Mound at Raffman

..Large mound at Poverty Point

 

Section--Plan--Oblique