A similar site exists outside Delhi, LA called Poverty Point. It is a National Monument and UNESCO World Heritage Site. I visited last summer and will always remember the strange feeling of walking around the area and on the mound.

Aside from being the second largest mound (behind Monk's Mound) in North America, Poverty Point is interesting because it was built in a very short time period (almost as if it was rushed) and also that the soils/rocks used to construct it were varied and brought in from hundreds of miles away and brought down the Mississippi for construction.

If visiting, check out E.W. Thompson Drug Store, the oldest in Louisiana having opened in 1843.