Poured concrete foundation for wall 8290. There is no visible interface between this foundation (8356) and foundation 8338 for wall 8122. This lack of visible interface suggests that the two foundations were constructed simultaneously. This puts walls 8290 and 8122 in phase with one another and is indicative of planning. However, note that wall 8122 abuts 8290.
Room I-19
photo taken from the north
Mortar foundation for wall 8290