According to a study led by LSU Department of Geology & Geophysics Professor Emeritus Brooks Ellwood, radiocarbon dating suggests that construction of the first mound began as early as 11,000 years ago by ancient Indigenous people.⁠ ⁠ The two grassy mounds, located along Dalrymple Drive, now stand about 20 feet tall and are two of the more than 800 similar man-made mounds across Louisiana, most of which have been destroyed by time.⁠ ⁠ “There’s nothing known that is man-made and this old still in existence today in North America, except the mounds,” said Ellwood, who led the study recently published in the American Journal of Science by Yale University.⁠ ⁠ Read more at the link in bio.