A light-colored slurry plaster marks the outlines of earthen walls exposed through excavations at Mound 7, Ngre Kataa. The upside down "T" shape shows the intersection of two walls. The vertically oriented wall is made from a lighter colored clayey soil compared to the darker horizontally oriented wall. Both walls were coated on the inside and outside with a thin plaster, appearing as a light-colored thin line exposed as archaeologists excavated the horizontal level. A red-and-white photo scale lies across one of the walls near a north arrow and a photo board with provenience information. Ngre Kataa, 6 June, 2009.
