The site formerly had as many as fourteen mounds, depending on the criteria used to describe a mound. Except for one small outlier to the south all are surrounding an exceptionally large central plaza that is aligned on an east-west axis. The large plaza measures close to 280 metres (920 ft) east to west and 175 metres (574 ft) north to south. These measurements are about three quarters the size of the Grand Plaza at Cahokia, which is the largest Mississippian culture plaza known. Other large sites from the region during the same time period (such as the Raffman, Winterville, or Holly Bluff) could easily fit their entire sites into the confines of Motts plaza. On the western edge of the plaza is Mound A, the largest at the site and one of the largest in the state and possibly the largest in the Tensas Basin region during the time period it was constructed. It is a platform mound about 90 metres (300 ft) by 100 metres (330 ft) at its base, 45 metres (148 ft) by 60 metres (200 ft) at its summit and over 8 metres (26 ft) in height. This produces a footprint that covers an area of over two acres. The eastern and southern borders of the plaza are bounded by two other large platform mounds, Mounds F and I respectively. The northern edge of the plaza has four small dome shaped mounds, aligned along a meander scar of Bayou Macon. 700 metres (2,300 ft) south of the mound group is a large village site thought to be contemporaneous with the mounds.