http://agathe.gr/guide/southwest_area.html
Southwest Area - Industry and Houses Leaving the area of the boundary stone, one can head southwest up a valley leading toward the Pnyx, meeting place of the Athenian assembly. Here are the complex remains ... Walls were of sun-dried mudbrick on stone foundations, with tiled roofs; most floors were of beaten clay with only occasional mosaics. Figure 27.