|Stratigraphic profiles of Excavation 3, showing the layer of dark midden earth (II) and underlying reddish sandy clay (I). Note scattered burned rock features. The unevenness of Stratum I may be due to the digging in of pits for roasting ovens. Stratum III was a sterile, windblown sand which sloped to the Brazos side. These sands were blown up from the riverbed. Profile from Krieger, 1946.